Laboratory Vacuum Catalog

Transcription

1 Laboratory Vacuum Catalog Application Specific Pumps High Vacuum Rotary Vane Pumps Dry (oil-free) Vacuum Pumps Components, Traps & Gauges

2 Laboratory Vacuum Catalog from Welch Rietschle Thomas Welch Vacuum has been your supplier of vacuum pumps for laboratory applications for over 00 years. In 996 Welch Vacuum became a wholly-owned subsidiary of Thomas Industries, the world leader in OEM compressors and vacuum pumps. This enabled us to draw on the wide range of Thomas oil-free compressor and vacuum pump technologies. We were able to greatly expand our laboratory applications-specific product line. In August 00, Thomas Industries acquired Werner Rietschle GmbH to create Rietschle Thomas. This brought additional vacuum pump and compressor technologies that are available for the creation of Welch laboratory application specific vacuum pumps. We are proud to offer these resources to serve your laboratory vacuum needs. CONTENTS Page Lab Application & New Product Information Pump Selection Chart for Common Lab Applications New DRYFAST ULTRA Torr (.7 mbar) PTFE Pumps & Systems & Typical Set-ups for Lab Applications 4 Five Key Advantages of Application Specific Pumps 5 Application Specific Pumps & Vacuum Systems Rotary Evaporator & Evaporator System (Concentrator) 6 & 7 Vacuum Manifold (Schlenk Line) 8 Freeze Dryer (Lypholizer) 9 Filtration Manifold & Flask 0 Laboratory Automation & Tissue Culture Systems Vacuum Oven Gel Dryer & Concentrator Glove Box 4 Vacuum Chamber, Annular Space & Transfer Line 5 Vacuum Pumps Chemical Duty Dry Vacuum Pumps (Oil-Free) 6 & 7 Standard Duty Dry Vacuum Pumps (Oil-Free) 8 & 9 Compact Direct-Drive High Vacuum Pumps 0 & CHEMSTAR Pumps & Accessories for Corrosive Gases & DUOSEAL Rugged Belt-Drive Vacuum Pumps 4 & 5 House Vacuum Systems 6 Vacuum Components & Service Kits Automatic Vacuum Controller 7 Vacuum System Connectors & Tubing 8-0 Exhaust Filters & On/Off Foot Switch Foreline Traps & Hose Adaptor Kits & Vacuum Pump Oils & QUICKCHANGE Oil Change System 4 Vacuum Gauges & Vacuum Regulators 7 & 5 Service Kits for Vacuum Pumps 5 & 6 Pumping Speed Curves 7 Product Directory By Flow & Vacuum; Catalog Number Index 8-40 Ordering, Service and Trademarks 4 See our online catalog for additional information, U.S.A. list prices, and repair part information. Welch Rietschle Thomas, 004. All rights reserved. Printed in U.S.A.

3 Pump Selection Chart For Common Lab Applications Application Welch Vacuum Flow Rate Unit Photo Model See Pumps & Systems x Vacuum Page Rotovap Rotovap System Volatiles, Low B.P. DRYFAST System 4 L/min. x B.P. <00 C with regulator, gauge, 9 Torr Samples 0-5 Liter condensate jars, ( mbar) self-cleaning auto-purge Rotovap High Boiler System L/min. x 070 DMF, Toluene, DRYFAST ULTRA System Torr (.7 mbar) other non-volatiles & Pump Samples 0-5 Liter L/min. x 0B-0 Torr (.7 mbar) Concentrator Concentrator Pump L/min. x 0B-0 0B-0 Samples <ml x 4, DRYFAST ULTRA Pump Torr (.7 mbar) DNA Pelleting DRYFAST ULTRA SYSTEM L/min. x 060 Compatible with: Torr (.7 mbar) SpeedVac & CentriVap Vacuum Manifold Schlenk Line 5 L/min. Vacuum Manifold Pump < millitorr 400B-0 DUOSEAL & (.x0 or CHEMSTAR Pumps mbar) 400N-0 8 L/min. GEM System 00 millitorr 8890A-70 (0. mbar) Freeze Dryer Freeze Dryer Pump Direct Drive pump 7 L/min. 897A-80 w/integral oil filtration system 9 Filtration CHEMSTAR 60 L/min. 40N-0 Low RPM Pump Filtration Pump Chemical Duty L/min. 0B-0 Standard Duty L/min. 5B L/min. x Aspiration Aspiration System 7.6 in. Hg Cell Harvester Standard Duty (80 mbar) 567B-50 Plate Washer 64 L/min. Chemical Duty 6.7 in. Hg 07B-0 (06 mbar) Tissue Tissue Culture System Culture With gauge, 45 L/min. x Aspiration regulator, liquid 7.6 in. Hg 546B-0 blockade system (80 mbar) Vacuum Oven Vacuum Drying Pump Drying Standard Duty Dry 00 L/min. 58B-50 Degassing Direct-Drive 7 L/min. 897A DUOSEAL 60 L/min 40B-0 Gel Dryer GELMASTER System Complete Gel Drying >50 L/min. of Vacuum System Vapor 460 with hose, 8 in. Hg (66 mbar)

4 D RYF AST U LTRA For Distillin Torr PTFE Pumps For Tight Spaces & Budgets 6 Corrosion resistant PTFE diaphragm pump Small footprint and compact 7 Steady reliable vacuum 5 4 Gas ballast inhibits gas vapor condensation 4 0B-0/0B-0 5 Models available in or 60Hz 6 Optional vacuum regulator available (cat. no. 4D) 7 Quiet DRYFAST ULTRA PTFE Vacuum Pumps Introducing two standalone oil-free chemical duty PTFE pumps with features and performance to rapidly strip high boiling point solvents and have a price to fit your budget. With pumping capacities of L/min and L/min respectively, and ultimate pressure of Torr (.7 mbar), these pumps generate the flow and vacuum level needed to handle high boiling point solvents (<60 o C) such as DMF, toluene, and xylene. Models 0 and 0 handle aggressive acidic, basic and solvent vapors by utilizing corrosion-resistant PTFE (fluorinated plastics) on all wetted surfaces. No cold traps are needed to operate. These standalone diaphragm vacuum pumps need very little maintenance leading to low cost of ownership and improved productivity. The method of simply pumping room air through the vacuum pump at the end of a distilling or concentrating run does purge the pump head of any condensed vapors resulting in a cleaned pump. Both models incorporate a gas ballast valve. The valve, located on the front of the pump, is important for inhibiting vapor condensation in the pump when pumping low boiling point solvents. The valve also directs air through exhaust valves to quickly return the pump to maximum vacuum performance when switching from low boiling point to high boiling point solvents (<60 o C). See pages 6 and 7 for our complete line of chemical-duty PTFE dry vacuum pumps. Cat. No. Description. 0B-0 5V, 60Hz, with N. American plug, gas ballast, L/min, Torr. 0C-0 Same as 0B-0, but with IEC connection & detachable Schuko line cord, 8 L/min,.7 mbar, CE. 0B-0 5V, 60Hz, with N. American plug, gas ballast, L/min, Torr. 0C-0 Same as 0B-0, but with IEC connection & detachable Schuko line cord, 7 L/min,.7 mbar, CE. Note:. See page 6 for more details. Oil-Free Concentration of Aqueous Solutions Water removal and drying concentration applications routinely employ a vacuum system made up of an oil-sealed rotary vane pump, acid neutralization trap and -55 o C refrigerated cold trap. Rotary vane pumps have been traditionally selected because of the deep vacuum they obtain to allow rapid drying and their low initial cost. DRYFAST ULTRA Torr PTFE vacuum pumps make possible an economical oil-free solution that is ideal for low volume evaporation of strong acids, bases and harsh organic solvents. Vacuum pump model 0B-0 (L/min, Torr) has the ultimate pressure and pumping speed when coupled with a -55 o C refrigerated cold trap to efficiently remove aqueous solutions and the chemical resistance to handle aggressive chemicals such as TFA, HCl, formic acid and acetic acid. Compatible with SpeedVac and CentriVap centrifugal concentrators. 0B-0 Refrigerated Trap (-55 C) Concentrator

5 g, Drying & Concentrating Torr Self-Cleaning Systems For Maintenance Free Use Digital absolute pressure read-out Corrosion resistant PTFE diaphragm pump Self-Cleaning feature activates on shut-down 4 Inlet separator traps liquids before being ingested Outlet separator collects ejected condensed vapors 6 Gas ballast inhibits vapor condensation 7 Quiet DRYFAST ULTRA Self-Cleaning Vacuum Systems Introducing two models of oil-free Torr vacuum systems designed for rotary evaporator and concentrator applications involving solvents with boiling points <60 o C. With Torr (.7 mbar) vacuum and high pumping speed efficiency, one observes rapid transfer of high boiling point solvents like DMF, toluene and xylene. Model 07 comes with a digital absolute vacuum read-out in units of Torr, mbar or pascal. Model 06 has identical vacuum and flow, but comes with dial vacuum read-out where knowing absolute pressure in the apparatus is not critical for your application, and the budget is tight. The system s patent-pending two-stage, flexible deep vacuum diaphragm pump resists chemical vapors thanks to fluorinated plastics used on all wetted surfaces including the diaphragm itself. An adjustable bleed valve mounted directly on the system s control panel lets you regulate the vacuum level. The Self-Cleaning feature automatically runs room air through the pump for two minutes at shutdown to rid the pump of residue ensuring quicker pump-down to ultimate vacuum and longer membrane service life. Critical to quick pump-down on high boiling point compounds following the stripping of volatile solvents is the gas ballast valve. The gas ballast leaks air into the -stage of the internal pump. The gas pathway is designed to quickly purge out liquefied solvents that are resting on the internal valves. This results in speedier pump-down to ultimate pressure. In addition, the gas ballast (vent switch) will also minimize condensation when pumping heavy vapor loads. Cat. No. Description V, 60Hz, with N. American plug, digital absolute vacuum read-out, L/min, Torr. 070 Same as 070 except wired for 0V, 50Hz, with IEC connection & detachable Schuko line cord. 7 L/min,.7 mbar, CE V, 60Hz, with N. American plug, dial vacuum gauge, L/min, Torr. Note: See page 7 for more details. Oil-Free Distillation of DMF & Other High Boilers (<60 o C) DMF removal from a sample in a rotary evaporator routinely employs a vacuum system made up of an oil-sealed rotary vane pump and a dry ice slurry cold trap. Rotary vane pumps have traditionally been selected because of the deep vacuum. A cold trap is employed to minimize the ingestion of DMF and other solvents into the pump and to aid in extending the service interval. DRYFAST ULTRA Torr Vacuum systems make possible a trap-free and oil-free solution that goes light on your limited research budget. Vacuum System model 070 (L/min, Torr) has the ultimate pressure and pumping speed to remove DMF efficiently. These specifications coupled with fluorinated plastic (PTFE) construction and the self-cleaning feature creates a virtually maintenance-free solution. Compatible with Buchi, Heidolph, and Labconco rotary evaporators Rotary Evaporator

6 Typical Set-ups For Lab Applications Proper vacuum system set-up in lab applications does reduce pump maintenance which lowers cost and increases user productivity. Proper vacuum system set-ups consist of the lab appliance, tubing, vacuum pump, and normally cold or liquid trap. Failure to use or maintain the appropriate trap will result in a shortened service life of the pump (See page for trap options). 546B-0 0 Liquid Trap Filtration DRYFAST ULTRA Rotary Evaporator 05B-0 GEM 567B-50 Cold Trap Liquid Trap DUOSEAL Rotary Evaporator 585B-50 Cell Harvester DRYFAST 5B-0 Cold Trap Concentrator Liquid Trap Aspiration DUOSEAL Liquid Trap Gel Dryer 00B-0 DUOSEAL DUOSEAL Cold Trap Cold Trap* GEM Vacuum Manifold 58B-50 *May be used without a cold trap for light vapor loads Vacuum Oven DUOSEAL FREEZE DRYER SYSTEM Freeze Dryer GELMASTER Gel Dryer 4

7 Five Key Advantages of Application Specific Pumps & Systems The business of Welch Rietschle Thomas is serving laboratory vacuum users. To more completely serve your needs, Welch has developed application specific products. Our reasons for doing this are as follows: Most cost effective vacuum solution - Increases user productivity - Saves time in set-up and operation Health and safety considerations built into design - Lowers hazardous waste generation - Improves safety Correct pumping technology extends service interval - Reduces downtime - Lowers maintenance costs Necessary pump accessories & instructions supplied - Eliminates searching for correct accessories - Insures proper operation procedures Application certified vacuum solution - Provides peace of mind with selecting the correct pump - Place to go for assistance Not only does Welch have the application specific products, Welch has global reach to support this wide range of innovative products. See the back cover for a listing of sales and service facilities around the world. See our online catalog for additional information. Welch Technical Seminar Available Vacuum applications often involve hazardous chemicals and biohazards. This can lead to health, safety, and maintenance issues. Welch developed a technical seminar geared for labs where there is a large amount of organic synthesis. Topics covered include: () Proper trapping and maintenance to reduce oil changes and repair needs; () Standard duty vs chemical duty oil-free and oil-sealed pumps; () Matching appropriate technology pump to the lab application; (4) Improving pump exhaust arrangements and (5) Protecting central vacuum systems. Approximately 60 minutes Minimum attendance 50 researchers for free seminar To inquire about seminar, please call Technical Service at ext. 889 or call the nearest Rietschle Thomas sales office. See back cover. 5

8 Rotary Evaporator & Evapor Select The System For Your Chemistry VACUUM SPECTRUM Chemical Group 0 Torr 0 Torr 0 Torr 0 0 Torr 0 - Torr 0 - Torr 0 - Torr Low Boiling Point Solvents Rough Vacuum Medium Boiling Point Solvents High Boiling Point Solvents Very High Boiling Point Solvents High Vacuum Fats, Oils & Polymers Examples Methylene Chloride Pentane,-Dichloroethane Acetone Benzene Chloroform Ethanol Acetonitrile Water Toluene Tert-butyl Alcohol Heptane DMF Xylene Isoamyl Alcohol Chlorobenzene Operating Range of System (See Pg ) 8890A B-0 For Solvent Boiling Points <00 C 5 Did you know that most rotary evaporators run between 0 and 500 Torr? 4 Vacuum regulator prevents bumping and foaming Corrosion resistant PTFE diaphragm pump Self-Cleaning feature activates on shut-down 7 4 Inlet separator traps liquids before being ingested 5 Outlet separator collects ejected condensed vapors 6 6 Gas ballast inhibits vapor condensation 7 Quiet 050 DRYFAST Self-Cleaning Vacuum System The DRYFAST Vacuum System is ideal for rotary evaporator and concentrator applications with boiling points <00 C. Vacuum levels are to 9 Torr( mbar) with a free air displacement of 4 L/min. Included are a vacuum regulator, easy-to-read dial gauge, gas ballast, intake and exhaust separator jars, and an automatic fresh air purge that cleans the system after each use and extends the life of the diaphragms. Cat. No. Description V, 60Hz, Ph, with N. Amer. plug; Dimensions:.75 L x 8 W x.5 H (.4 x 0. x 9. cm). Weight: 8 lbs (.7 kg), CSA. 050 Same as 050, except wired for 0V, 60Hz, with N. American 0V plug. 050 Same as 050, except wired for 0V, 50Hz, with IEC connection & detachable Schuko line cord, 8 L/min., CE Same as 050, except wired for 0V, 50Hz, with IEC connection & detachable UK line cord, 8 L/min., CE. Note:. See page 7 for more details. 6

9 ation System(concentrator) For Solvent Boiling Points <60 C Vacuum regulator to eliminate bumping and foaming Exhaust mist eliminator prevents loss of vaporized oil Gear pumping mechanism is very tolerant of vapors GEM Vacuum System The GEM system is ideal for evaporation applications with boiling points that are <60 C. The direct-drive vacuum pump contains a gear pumping mechanism that allows it to be very tolerant of vapors. The high vapor tolerance of a gear mechanism is due to its high efficiency for pumping vapors without condensing them in the pump. The system comes complete with a vacuum regulator for easy control and an exhaust mist eliminator for recovering and recycling oil back into the pump. 8890A-70 Inner Gear Outer Gear Cat. No. Description. 8890A-70 L/min, x0 - Torr, 5V, 60Hz, Ph, with N. American 5V plug, CSA 8890C-7 Same as 8890A-70, except 6L/min, wired for 0V, 50Hz, with Cont. European (Schuko) plug, CE Note:. See page 0 for more details. * For Solvent Boiling Points <95 C Large oil reservoir dilutes contaminants Low RPM reduces friction and wear Ultimate pressure <0.00 Torr(0.00 mbar) *Optional exhaust filter, cat. no B-0 DUOSEAL Vacuum System DUOSEAL vacuum systems are ideal for evaporation applications with boiling points of <95 C. These pumps have large oil reservoirs that help to dilute contaminants. Pumps have ultimate pressure <0.00 Torr for handling very high boiling point compounds. Systems can be ordered with an optional exhaust filter* to control oil mist. An in-line cold trap is always recommended when connected to a high vapor application. Use with distillation controller for boiling points <00 C. Consult factory for specific situations. Cat. No. Description. 400B-0 5 L/min, x0-4 Torr, 5V, 60Hz, Ph with N. American 5V plug 400C-0 Same as 400B-0, except wired for 0V, 50Hz with Cont. Euro. (Schuko) plug, CE Note:. See page 4 for more details. Works with These Rotovap and Evaporation Systems* Labconco SpeedVac Büchi Concentrators Concentrators Rotovaps SPD0B R-00 SPDV R-05 SPDP R-0 R-50 R-87 * us at welchvacuum@thomasind.com for recommendations on other manufacturers and models. 7

10 Vacuum Manifold (Schlenk Line) Inner Gear The Right Pumping Capacity In A Compact Pump Outer Gear Did you know excessive pumping capacity dramatically increases pump maintenance requirements? Gear pumping mechanism very tolerant of vapors 8890A-70 Ultimate pressure <0. Torr(0. mbar) for final drying Pumping capacity of L/min for 4-6 stopcock manifolds GEM Vacuum System The GEM vacuum system provides the vacuum pressure and pumping capacity for a large manifold handling 4 to 6 large drying tubes at once. The system comes with a vacuum gauge to indicate leak tightness of the manifold, bleed valve to release vacuum without venting manifold and an oil recycler. A foreline cold trap is always recommended when used on vacuum manifolds. If you use a higher capacity pump than needed, the condensed matter in the trap will be sublimed into the pump and recondensed, causing the pump to fail. Cat. No. Description. 8890A-70 L/min, 0. Torr(0. mbar), 5V, 60Hz, Ph with N. American 5V plug, CSA 8890C-7 Same as 8890A-70, except 6 L/min, wired for 0V, 50Hz with Cont. European (Schuko) plug, CE Note:. See page 0 for more details. The Most Durable At The Deepest Vacuum * High contamination tolerance Ultimate <0.00 Torr(0.00 mbar) Pumping capacity of 5 L/min for 4-6 stopcock manifolds 400B-0 *Optional exhaust filter, cat. no. 47 DUOSEAL & CHEMSTAR Vacuum Systems Belt-drive vacuum pumps are known for their ruggedness world-wide. These pumps have large oil reservoirs for their pumping capacity to dilute contaminates coupled with low pump RPM to reduce friction and wear. For pumping corrosive gases, a CHEMSTAR 400N-0 with corrosion resistant components is commonly used. A foreline cold trap is always recommended for all belt-drive pumps when used on vacuum manifolds. Cat. No. Description. 400B-0 DUOSEAL, 5 L/min, x 0-4 Torr(. x 0-4 mbar), 5V, 60Hz, Ph with N. American 5V plug 400N-0 CHEMSTAR, 5 L/min, x 0-4 Torr(. x 0-4 mbar), 5V, 60Hz, Ph with N. American 5V plug Note:. See pages & 4 for more details. Application Note on Vacuum Manifolds Vacuum manifolds are commonly used for the final drying of samples removed from a rotary evaporator. Organic solvents and/or acids left behind during the distillation process are removed over several hours or more depending on the sample size. A foreline cold trap (see page 8) is always recommended to minimize the ingestion of the solvents. An acid neutralization trap is also recommended between the cold trap and the pump when strong acids are present in the sample. When the drying is finished for the day, it is very important to either turn the pump off and remove/clean the trap or isolate the trap from pump using a valve. The reason for this is to prevent sublimination of condensed solids or vaporized liquids from the cold trap recondensing in the pump. The use of large capacity pumps (greater than 40 L/min) on vacuum manifolds does shorten the oil change interval. The reason is the larger pump will accelerate the sublimation process. It is common to see at the end of a drying run when a large capacity pump is used that no condensables are in the trap because the chemicals have been drawn into the pump. There is a common misperception that a large pumping capacity pump will shorten the drying time. Due to tubing restrictions in the manifold and stopcock, this is not the case. Drying time differences between a large and a small pump occur only when the manifold system is leaky! Leaky vacuum systems should be repaired. 8

11 Freeze Dryer (Lypholizer) Extended Service Interval In A Compact Pump "Did you know the by-products from TFA used in sample preparation causes rapid degradation of standard pump oil?" Continuous neutralization of acids in oil 897A-80 Gold oil resistant to chemical attack Large oil capacity. Liters Direct-Drive Freeze Dryer Vacuum System The Welch direct-drive freeze dryer vacuum system is designed for the harsh chemical mixtures TFA, TFA by-products, acetonitrile, and/or HBr, removed during sample drying. Oil is continuously filtered and acids are neutralized using an integral oil filtration system. A large oil capacity (approximately. liters) dilutes organic vapors that do mix with the pump oil during the freeze drying run. Comes with Welch Gold oil (see pg. 4), which has excellent resistance to chemical attack. Cat. No. Description. 897A-80 7 L/min, 5V, 60Hz, Ph with N. American 5V plug 897C-80 Same as 897A-80 except 4 L/min at 50Hz, 0V with universal IEC connector and detachable Schuko line cord, CE 40A-0 Replacement wrench Note:. See pg for more details. Rugged Pump For Corrosive Vapors Lower rotational speed for longer service life Vital parts corrosion resistant Large oil reservoir dilutes contaminants CHEMSTAR Vacuum Pump The CHEMSTAR belt-driven pump has built into it the three key defining features needed for harsh chemical freeze dryer applications. The high contamination tolerance comes from a large oil reservoir and few moving parts increasing pump ruggedness. The low pump rotational speed (580 RPM) reduces frictional wear resulting in less wear and a cooler running pump. Vital pump parts are corrosion resistant. Comes with Welch Gold Oil (see pg. 0), which has excellent resistance to chemical attack. Cat. No. Description. 40N-0 60 L/min, 5V, 60Hz, Ph with N. American 5V plug 40N-50 Same as 40N-0, except 0V, 50 Hz w/schuko plug, CE Note:. See pg for more details. 40N-0 Application Note on Freeze Drying Drug discovery labs are using freeze dryers for the final drying step of heat sensitive proteins and peptides samples isolated using HPLC or column LC. These samples typically are dissolved in a water, acetonitrile and 0.% TFA solution. TFA and its by-products will cause rapid breakdown of pump oil leading to a rapid rise in oil viscosity leading to pump failure sometimes after only a few runs. There is no fail safe solution to prevent the ingestion of harsh chemicals into the pump. Three steps to minimize ingestion of harsh chemicals are:. Clean the freeze dryer s condenser after each drying run to prevent sublimation from trap of harsh chemicals into the pump;. Size the pump for the freeze dryer too high a pumping speed will shorten residence time in condenser dropping its trapping efficiency and. Spread the drying of multiple samples over time to evenly distribute the vapor load on condenser. Caution: For high acetonitrile vapor loads, use a cold trap operating at -75 C or lower. 9

12 Filtration Manifold & Flask Economical Dry Pumps For Aqueous Solutions Did you know that the most common reason filtration pumps fail is because of liquid ingestion into the pump? Water trap protects against accidental ingestion Standard Duty Pumps Standard duty, oil-free pumps provide continuous, reliable vacuum your filtration application requires. Added accessories simplify use, lower noise level, and extend service life. All wetted parts are treated for corrosion protection from moisture. Use cat. nos. 5B-0, 54B-0 and 546B-0 (5V, 60Hz); 5C-0, 54C-0 and 546C-0 (0V, 50Hz) for pressure filtration up to 00 psig. Pumps are compact, lightweight, and easy to use. Note: May be used with buffer solutions, but not recommended for use with acidic, basic or organic solutions. Cat. No. Description. 5B-0 L/min, 5.6"Hg, 5V, 60Hz, Ph with N. American 5V plug 5C-0 8 L/min, mbar, 0V, 50Hz, Ph with IEC connector and detachable Schuko line cord, CE 567B-50 0 L/min, 7.6"Hg, 5V, 60Hz, Ph with N. American 5V plug 567C-50 8 L/min, 80 mbar, 0V, 50Hz, Ph with IEC connector and detachable Schuko line cord, CE Note:. See pages 8-9 for more details. Chemically Resistant Dry Pumps For Harsh Chemicals 5B-0 Vacuum regulator and gauge adjusts and monitors vacuum level Muffler quiets pump PTFE construction resists chemical attack Portable for lab to lab usage Steady, reliable vacuum Chemical Duty Pumps Chemical duty, diaphragm pumps are the ideal oil-free solution when filtering acidic, basic or organic materials. Wetted parts are made of fluorinated plastic (PTFE) which can withstand the use of aggressive chemicals. A small footprint, carrying handle, and attached line cord make these pumps easy to move and easy to use. Cat. No. Description. 00B-0.7 L/min, 5.5"Hg, 5V, 60Hz, Ph with N. American 5V plug 00C L/min, 46 mbar, 0V, 50Hz, Ph with IEC connector and detachable Schuko line cord, CE 05B-0 50 L/min, 6.7"Hg, 5V, 60Hz, Ph with N. American 5V plug 05C-0 4 L/min, 06 mbar, 0V, 50Hz, Ph with IEC connector and detachable Schuko line cord, CE Note:. See pages 6-7 for more details. 00B-0 Pump Selection Chart (5V, 60Hz). 0 # of Funnels Standard Duty Chemical Duty 5B-0 00B-0-5B-0 0B B-0 05B B-0 05B-0 6 Funnel Manifolds 567B-50 07B-0 Multi Tabletop 585B-50 07B-0 Note:.See pages 6-9 for complete specifications of pumps.

13 Laboratory Automation & Tissue Culture Systems High Flow For Aspirating 96 or 56 Well Systems "Did you know most aspiration systems run between "Hg (68 mbar) and 8"Hg (0mbar)?" Liquid trap to avoid ingestion of fluids into the pump High Flow For Aspirating Harsh Chemicals Vacuum to 7.6 Hg(80 mbar) Dial vacuum gauge for continuous vacuum level monitoring High Through-Put Standard Duty Dry Pumps Standard duty, oil-free pumps provide continuous high throughput flow for up to 56 well systems. Each pump comes with a vacuum gauge to monitor vacuum level and an inlet trap to prevent the accidental ingestion of liquids/particles. The high flow allows the aspiration of sticky or viscous substances. Both cat. nos. recommended for aspirating aqueous solutions including buffers, but not for acidic, basic or organic vapors and gases. Cat. nos. 585B-50 (5V, 60Hz), 585C-50 (0V, 50Hz) recommended for 96 and 56 well systems. Cat. nos. 567B-50 (5V, 60Hz), 567C-50 (0V, 50Hz) recommended for 96 and smaller well systems. See pages 8-9 for complete specifications. PTFE construction resists chemical attack Vacuum to 6.7 Hg(06 mbar) High flow, steady reliable vacuum High Through-Put Chemical Duty Dry Pumps Chemical duty oil free pumps provide continuous high throughput flow for automated organic synthesis systems. Wetted parts are made of fluorinated plastics, that can withstand the use of aggressive chemicals. Cat. nos. 05B-0 (5V, 60Hz), 05C-0 (0V, 50Hz) recommended for up to well systems and 07B-0 (5V, 60Hz), 07C-0 (0V, 50Hz) for up to 96 well systems. See pages 6-7 for complete specifications. Accessorized For Tissue Culture Aspiration 05B-0 567B-50 Water trap protects against accidental ingestion Vacuum regulator adjusts and monitors vacuum level Muffler quiets pump 546B-0 Standard Duty Dry Pump Standard duty pump, cat. no. 546B-0 (5V, 60Hz), 546C-0 (0V, 50Hz), is an ideal economical solution for aspirating tissue culture samples. Added accessories simplify use, lower noise level and extend service life. All wetted parts are treated for corrosion protection from moisture. Pump is compact, lightweight, and easy to use. Recommended for aspirating aqueous solutions including buffers, but not for acidic, basic or organic vapors and gases. Application Note on Aspiration The most common reason for vacuum pump failure is ingestion of liquid into the pump mechanism. Dry vacuum pumps are designed for pumping gases and vapors. Liquids ingested into the pump mechanism will either cause the valves to fail on Standard Duty Pumps or the diaphragm to rupture on Chemical Duty Pumps. Welch recommends a liquid trap with a volume greater than twice the volume aspirated in a day be installed between the pump and aspiration system. At the end of each day, the liquid trap needs to be emptied.

14 Vacuum Oven Oil-Free Drying of Moist Samples "Did you know the most common vacuum leak occurs at the hose reducer to the oven?" Ultimate to <5 Torr(6 mbar) 58B-50 Lightweight, compact pump Oil-Free Operation For Reduced Maintenance Welch Standard Duty Dry pumps are ideal for pumping water vapor. These WOB-L piston pumps have a high water vapor tolerance. Pumps come with inlet liquid trap, mounted vacuum gauge and vacuum regulator. Note: Standard Duty Dry Pumps, are not recommended for pumping organic, acidic and basic vapors. Inlet liquid trap with vacuum regulator Durability At The Deepest Vacuum Low pump RPM for long service life Ultimate <0.00 Torr(0.00 mbar) High contamination tolerance 40B-0 DUOSEAL High Vacuum Pumps DUOSEAL Vacuum Pumps are known for their ruggedness world-wide. These pumps have large oil reservoirs to dilute contaminates coupled with low pump RPM to reduce friction and wear. Pump can be ordered with an optional exhaust filter (see page ) to control exhaust oil mist. Models 400B-0, 405B-0 and 40B-0. Compact For Moving From Lab To Lab Lightweight, compact pump Ultimate <0.00 Torr(0.004 mbar) Integral isolation valve 8907A Welch Direct-Drive Vacuum Pumps Welch Direct-Drive Vacuum Pumps are high performance pumps, but very portable. These pumps come with isolation devices integral to the pump to prevent oil and air contamination of your system in the event of a power failure. Pump can be ordered with an optional exhaust filter (see page ) to control exhaust oil mist. Models 8905A, 8907A and 89A. Pump Selection Guide for Vacuum Ovens Cat. No. 5V/60Hz. NAPCO/Precision VWRbrand Fisherbrand Lab-Line Lindberg/BlueM 400B-0, 8905A 5066, 9 400, 40 80A, 8A , 65, V094 56B B-0, 8907A 500, A, 8A 68, 68 V08 56B-50 40B-0, 89A , 68 V084 58B-50 Note:. For other voltages, see pages 4 and 5 for DUOSEAL, pages 0 and for DIRECTORR and pages 8 and 9 for Standard Duty Dry pumps.

15 Gel Dryer & Concentrator Fast, Crack-free Gel Drying Cat. No. Description 460 5V, 60Hz, Ph, with N. American 5V plug Dimensions: 4.5" L x 5.5" W x 4 H (8.6 x 49.4 x 5.6 cm) Weight:.5lbs(5.kg). 460 Same as 460, except wired for 0V, 50Hz, with Cont. Euro. (Schuko) plug. 460 Same as 460, except wired for 0V, 60Hz, with N. American 0V plug Same as 460, except for 00V, 50/60 Hz, with US 5V plug(japan) Same as 460, except for 0V, 50Hz, with UK 0V plug. 8995C One liter of replacement trapping fluid. 8995C-70 One gallon of flushing fluid. Did you know that >90% of liquid/vapor, by mass, comes off in the first 5 minutes of drying? Internal cooling fan aids vapor collection Reservoir trap operates at room temperature Diaphragm vacuum pump pulls off moisture GELMASTER Gel Dryer Vacuum System A high efficiency diaphragm pump and a vapor trap make this pump equivalent to an oil-sealed, rotary vane pump with a dry ice trap. The vapor trap has reusable trapping fluid that doesn t mix with the collected condensate. It will handle 0 to 5 drying runs before draining is necessary. Simply open the valve and drain the collected fluid. Patented design (No. 5,89,64). Gel Dryer Vacuum System comes complete and ready to use. Includes 5 ft. (.5 m) of /8 in. (0 mm) ID PVC vacuum tubing, in-line stopcock, hose clamps, detachable line cord, and one liter of trapping fluid. Welch recommends flushing out vapor trap once a year (cat. no. 8995C-70) for optimum performance. 460 Two Applications With One Pump Corrosion resistant PTFE diaphragm pump Self-Cleaning on shut-down Cold Trap Concentrator Gas ballast inhibits vapor condensation 050 Liquid Trap Gel Dryer DRYFAST Self-Cleaning Dry Vacuum System The Self-Clean Dry Vacuum System with 4 60Hz of pumping capacity is sufficient for either a gel dryer or a concentrator. Due to the high vapor load from a gel dryer, an in-line Dry Ice Slurry Cold Trap is recommended. A typical set-up is shown. Cat. No. Description V, 60Hz, Ph, with N. American plug. 4 L/min., 9 Torr. Dimensions:.75" L x 8" W x.5 H (.4 x 0. x 9. cm) Weight: 8lbs (.7kg) 050 Same as 050, 50Hz with IEC connection and detachable Schuko line cord. 8 L/min., mbar, CE Note:.See page 5 for more details. Works with all Gel Dryers Including: Cat. No. (5V/60Hz) Bio-rad Hoefer FisherBiotech Labconco 460 or SE 00,GD 000 FB-GD ,700-96

16 Glove Box Oil-Free Evacuation of Glove Box and Transfer Chamber "Did you know the dial vacuum gauge on the transfer chamber gives a vacuum reading relative to atmospheric?" High flow - 00 L/min, and vacuum to 5 Torr(9.8" Hg) 58B-50 Gauge to monitor vacuum level Lightweight, compact pump Standard Duty Dry Vacuum Pump Oil-Free Vacuum Pump provide continuous, reliable vacuum that your glove box application requires. Suited for evacuating the transfer chamber during the purge fill cycle and purging a glove box up to 0 cubic feet(0.84 cubic meters). Added accessories simplify use, lower noise level, and extend service life. Cat. No. Description. 58B L/min, 9.8" Hg, 5V, 60Hz with N. American 5V plug 58C-50 50/60Hz, 6.7 mbar, 0V 50Hz with IEC connector and detachable Schuko line cord, CE Note:. See pages 8-9 for more details. High Vacuum For Stainless Steel/Glass Glove Boxes High flow 60 L/min, and vacuum to <0.00 Torr Low pump RPM for long service life High contamination tolerance for regeneration DUOSEAL Vacuum Pump DUOSEAL Vacuum Pumps are known for their ruggedness world-wide. These pumps have large oil reservoirs for their pumping capacity to dilute contaminates that pass thru the dry ice trap used during regeneration. Pump can be ordered with optional exhaust filter (cat. no. 47A) to control exhaust oil mist. Cat. No. Description. 40B-0 60 L/min, 5/0V, 60Hz Ph with N. American 5V plug 40C-0 Same as 40B-0, except 0V, 50Hz with IEC connector and detachable Schuko line cord, CE Note:. See pages 4-5 for more details. 40B-0 Application Note on Glove Boxes Glove boxes are commonly used for transferring air sensitive compounds, containment of hazardous materials, and performing experiments under controlled conditions. Standard glove boxes and transfer chambers aren t normally evacuated much below 5 Torr(9" Hg) due to plastic material limitations Both acrylic and polycarbonate which are used in standard glove boxes are not suited for deep vacuum ( Torr operation). High end glove boxes capable of deeper vacuum normally are constructed of stainless steel & heavy glass plates. These glove boxes include continuous gas purification of the main glove box chamber using a circulating fan or pump. After about 6 months, the purifier canister is regenerated by passing inert gas over the unit while heating followed by a few hours of full vacuum. Glove box manufacturers vary in their recommendation of the depth of vacuum needed in this final step to regenerate their purification canister. 4

17 Vacuum Chamber, Annular Space & Transfer Line Portable Oil-Free General Utility Roughing Pump "Did you know the depth of vacuum and chamber volume determines what type and flow of pump is needed?" 58B-50 Pumping capacity to 00 L/min and vacuum to < 5 Torr Vacuum gauge, inlet trap and vacuum regulator Lightweight, compact pump Standard Duty Dry Vacuum Pump Oil-Free Vacuum Pump for roughing vacuum chambers, annular spaces (i.e. dewars) and transfer lines. Pump mechanism is an economical twin head oil-free Wob-L piston known for reliability and durability. Rugged pump handles 0,000+ roughing cycles atmospheric to 5 torr before needing simple piston seal maintenance. Pump weighs only lbs(0.5 kg) and is 7. L x 7.6 W x.7 H(49 x 9 x 97 cm). Cat. No. Description. 58B L/min, 5V, 60Hz with N. Amererican 5V plug 58C-50 8 L/min, 0V, 50/60Hz Ph with IEC connector and detachable Schuko line cord, CE Note:. See pages 8-9 for more details. Portable High Vacuum Roughing Pump Pumping capacity to 0 L/min and vacuum to <0.00 Torr Built-in isolation device 89A Lightweight, compact pump Welch Direct-Drive High Vacuum Pump Welch direct-drive pumps are high performance pumps that are portable. With ultimate vacuum to <0.00 Torr, annular spaces can be evacuated to a deep vacuum. Pump can be ordered with optional exhaust filter (see pg 0) to control oil mist during evacuation. Model 89A, 08 L/min, weighs 4 lbs.(8 kg) and is 8.5 L x 6.5 W x 9.6 H(47. x 6.5 x 4. cm). Cat. No. Description. 89A 08 L/min, 5/0V, 50/60Hz with N. American. 5V plug 89C Hz, 5/0V, 50/60Hz with IEC connector and detachable Schuko line cord, CE Note:. See pages 0- for more details. Application Note for Roughing Vacuum Chambers Evacuation of chambers, annular spaces and transfer lines is common in material science, physics and physical chemistry labs. These vacuum tight spaces are evacuated to provide insulation, roughing out the volume prior to using a turbomolecular pump, cryopump regeneration, etc. The depth of vacuum and size of the space determines what type and size of pump is needed. A dry pump with a pumping capacity of 00 L/min can be used to evacuate 840 L volume (0.84 cubic meters) in a reasonable time. High vacuum pumps based on oil sealed rotary vane technology use a the rule of thumb of to.5 times the volume of space to determine pumping capacity (00 L volume needs a 00 to 50 L/min pump). The reason for the differing rule on oil sealed pumps is that the evacuation needs to be below 0 Torr in less than 0 minutes to avoid overheating the mechanism. Oil-free piston pumps don t overheat on evacuating larger chambers, however the time to maximum vacuum takes longer the smaller the capacity. 5

18 Dry Diaphragm PTFE Vacuum Pumps. Chemical Duty Dry Compact, Corrosion-Resistant, Oil-Free Pumps Suited For: Distillation Desiccation Vacuum Filtration Aspiration Degassing 0B-0 0B-0/00B-0 DRYFAST 0B-0/0B-0 DRYFAST ULTRA Specifications Welch Model Free Air Displacement 60Hz 0.45(.7) 0.78() 0.78() 0.78().().().8(50) m 50Hz 0.6(0.6).(8).(8).(8).6(7).6(7).5(4) Ultimate Pressure, Torr(mbar) 0(46) 00() 9() (.7) 9() (.7) 80(06) Maximum Vacuum, in. Hg Motor Horsepower (watts) /(6) /5(50) /5(50) /5(50) /5(50) /5(50) /5(50) Gas Ballast No No Yes Yes Yes Yes No Tubing Needed, I.D. in. (mm) /4(7) /4(7) /4(7) /4(7) /4(7) /4(7) /4(7) Intake Exhaust Thread NPT /4 /4 /4 /4 /4 /4 /4 Weight (lbs.) 5.5(.4) 6.(7.4) 0(9.) 0(9.) 0(9.) 0(9.) 0(9.) Overall Dimensions L in. (cm) 6.(5) 0(5.4) 0(5.4) 0(5.4) 0(5.4) 0(5.4) 0(5.4) W in. (cm) 5.5(40) 7(7.8) 0(5.4) 0(5.4) 0(5.4) 0(5.4) 0(5.4) H in. (cm) 7.5(88) 6.9(7.5) 6.9(7.5) 6.9(7.5) 6.9(7.5) 6.9(7.5) 6.9(7.5) Ship Weight, lbs (kg) 8.(.8) 8(8.) 8(8.) 8(8.) 8(8.) 8(8.) 8(8.) Shipping Carton Dimensions 0x0x0 4x4x4 4x4x4 4x4x4 4x4x4 4x4x4 4x4x4 L x W x H in. (cm) (5.4x5.4x5.4) (5.6x5.6x5.6) (5.6x5.6x5.6) (5.6x5.6x5.6) (5.6x5.6x5.6) (5.6x5.6x5.6) (5.6x5.6x5.6) Ordering Information 4,5. Wired for 5V, 60Hz, Ph 00B-0 0B-0 0B-0 0B-0 00B-0 0B-0 05B-0 with N. Amer. 5V Plug Wired for 0V, 50Hz, Ph 00C-0. 0C-0. 0C-0. 0C-0. 00C-0. 0C-0. 05C-0. w/cont. Euro. (Schuko) Plug Wired for 00V 50/60Hz 0C-05 0C-05 0C-05 00C-05 0C-05 05C-05 for Japan Notes:. Corrosion resistant construction using flourinated plastics for handling aggressive vapors and gases.. 50Hz models supplied with CE marking.. Model 07 comes with absolute pressure read out. For 070, pressure read out is factory preset in Torr. For 070, preset in mbar. For 0705, preset in pascal. 6

19 V acuum Pumps Accessories Vacuum Regulator Connects to pump intake for easy regulation of vacuum level. Includes an easy to read dial gauge. All stainless steel. Pump Model Cat. No. 0, 0, 00, 05, 4D 07, 00, 0, 0 05B-0/07B DRYFAST 070 DRYFAST ULTRA Inlet/Exhaust Separator DRYFAST DRYFAST ULTRA with Dial Gauge with Dial Gauge with Digital Gauge (64).(4).().().(5).7(8).6(7).6(7) 80(06) 9() (.7) (.7) Glass jar assembly that attaches to the pump intake or exhaust. Captures accidentally ingested liquids before they move into the pump. Capacity 0 ml. Pump Model Cat. No. 00, 0, 0, 4B 00, 05, 07, 05, 0, /5(50) /5(50) /5(50) /5(50) No Yes Yes Yes /4(7) /4(7) /4(7) /4(7) /4 /8 /8 /8 0(9.) 0(.6) 0(.6) 0(.6) Vacuum Hose Thick walled hose for vacuum or pressure applications. Hose clamp information available on page 9. 0(5.4).6(4.).6(4.).6(4.) 0(5.4) (0.5) (0.5) (0.5) 6.9(7.5).(8.7).(8.7).(8.7) 8(8.) 6(6.) 6(6.) 6(6.) 4x4x4 6x6x8 6x6x8 6x6x8 (5.6x5.6x5.6) (40.6x40.6x45.7) (40.6x40.6x45.7) (40.6x40.6x45.7) Pump Model Cat. No. 00, 0, 0, , 05, 07, 0, 0 07B C C Models 00, 0, 0, 0, 05, 05, 00, 0, 05, 07, 05, 06 and 07 are constructed of PTFE heads, Kalrez /Chemraz valves and a PTFE coated, molded diaphragm. 5. All standalone pumps supplied with an exhaust silencer, loose hose barb for exhaust port and an installed intake hose barb. On/Off Foot Switch Hands free on/off pump operation No adaptors or special connection needed Plug directly into the power source outlet 5V, 60Hz only Pump Model Cat. No. 00, 0, 0, 40A 00, 05, 07, 0, 0, 5, 5, 54, 546, 56, 567, 58, A 7

20 Standard Duty Dry WOB-L Piston Dry Vacuum Pumps. Compact, Economical Oil-Free Pumps Suited For: Vacuum Drying Desiccating Aspiration Degassing Chamber Roughing 5B-0 5B-0/54B-0 546B-0 Specifications Welch Model Free Air Displacement CFM 60Hz 0.9() 0.76().(4).6(45).(60)) m /hr 50Hz 0.55(9.).(8).7(8).(8).0(50) Ultimate Pressure, Torr (mbar) 9(9) 00() 70(9) 60(80) 5(6.7) Max Pressure PSIG (pascal) (. x 0 5 ) 00(0 6 ) 50(5 x 0 5 ) 00(0 6 ) Maximum Vacuum, in. Hg Motor Horsepower (watts) /0(5) /8(9) /8(9) /4(90) /(50) Tubing Needed, I.D. in. (mm) /6(5) /4(7) /4(7) /4(7) /8(0) Intake Exhaust Thread NPT /6 in. Hose /4 /4 /4 /4 Weight (lbs.) Overall Dimensions L in. (cm) 7.6(9.4) 8.(0.6) 8.(0.6) 0(5.4) 7.(4.9) W in. (cm) 4.5(.4) 8.8(.4) 8.8(.4) 7.5(9.) 6.5(6.5) H in. (cm) 7.5(9.) 0(5.4) 0(5.4) 9(.9) 0.5(6.7) Ship Weight, lbs (kg) 6() 5(6.6) 5(6.6) 8.5(8.4).5(9.7) Shipping Carton Dimensions x 9 x x 0.5 x 5 x 0.5 x 5 x 0.5 x.6 x 5. x. L x W x H in. (cm) ( x.8 x 4.) (8. x 6.7 x 0.) (8. x 6.7 x 0.) (8. x 6.7 x 0.) (60 x 8.4 x.) Ordering Information,. Wired for 5V, 60Hz, Ph with N. American 5V Plug 5B-0. 5B B B B-50 Wired for 0V, 60Hz, Ph with N. American 0V Plug 5C C C-0 4. Wired for 0V, 50Hz, Ph. with Cont. Euro.(Schuko) Plug 5C-0. 5C C C C-50 Wired for 00V, 50/60Hz, Ph with a plug 5C-05. 5C C-56 Notes:. All models are recommended for pumping vapors of aqueous solutions including buffers, but not for acidic, basic or organic vapors or gases.. 50Hz units supplied with CE marking. 8

21 V acuum Pumps Accessories Vacuum Hose Thick walled hose for vacuum or pressure applications. Hose clamp information available on page 9. Pump Model Cat. No. 5, 54, 545, 56, , 58, B-50/56B B-50/58B (00).5(00) 7.(0) 4.9(8) 4.9(8) 0(68) 60(80) 5(6.7) 60(80) /(50) /(50) /(50) /8(0) /8(0) /8(0) /4 /4 / (8.) 7(4.) 7(4.) 0(5.4) 7.5(9.) 7.5(9.) 0(5.4) (0.5) (0.5).5(9.7) 9.5(.4) 9.5(.4).6 x 5. x..6 x 5. x..6 x 5. x. (60 x 8.4 x.) (60 x 8.4 x.) (60 x 8.4 x.) Exhaust Silencer Exhaust silencers are installed in the exhaust port of the pump to reduce pump noise. Pump Model Cat. No. 565, 585 4C 56 4D 58 4E 0, 0, 00, 4B 05, 07 Replacement Jars Plastic (45C) or glass jar (45B) to replace the collection jar included with the pumps. Pump Model Cat. No. 5, 55, 545, 54 45C 56, 565, 58, B 050, 060, 070 4B 4C 4D/4E 45C 45B 567B-50 58B B C-50 58C C-50 58C-56 Dial Vacuum Gauge Inexpensive gauge for measuring vacuum level. Not an absolute pressure gauge. Gauge uses atmospheric pressure as reference. /8 in. NPT connection. (7600 is /4 in. NPT connection.). Model 5 can deliver PSIG (. x 0 5 pascal). 4. Models 5, 54 and 546 come with vacuum (and pressure) regulator, vacuum (and pressure) gauge, silencer and water trap. Models 5 and 546 can deliver 00 PSIG (0 6 pascal). Model 54 can deliver 50 PSIG (5 x 0 5 pascal). Gauge Units Cat. No. in. Hg., mm Hg. (Brass) 760 Pascal (Brass) 760 in. Hg., mm Hg. (Brass) 7600 in. Hg., mm Hg (Stainless) 760 9

22 Compact Direct Welch Vacuum Pumps Lightweight, Compact, High Performance Pumps Suited For: General Vacuum Work Laboratory Applications OEM Instrumentation Replacement Pumps for Instruments and Equipment 8890A 8905A 8907A/89A/897A (see note ) Specifications TWO-STAGE VACUUM PUMPS. Welch Model Free Air Displacement CFM 60Hz.().8(5).6(7).8(08) 6.(7) 7.7(8) m /hr 50Hz.6(6).6(4).7(6) 5.4(90) 8.6(44) 0.9(8) Ultimate Pressure, Torr(mbar). x 0 (0.) x 0 (0.007) x0-4 (0.000) x0-4 (0.000) x0-4 (0.000) x 0 4 (0.0004) Sound Level, dba Motor/Pump Speed (60Hz) Motor Horsepower (watts) /4(90) /4(90) /(70) /(70) /(70) /(70) Oil Capacity, qt. (liters) 0.48(0.45) 0.4(0.4).0(0.95) 0.9(0.86) 0.9(0.86).(.) Tubing Needed, I.D. in. (mm) /8 /6, 7/6 7/6, /6 7/6, /6 7/6, /6 9/6, /6 (0) (5, ) (, 0) (, 0) (, 0) (4, 0) Intake Connection. (thread) Barb (/4 in NPT) UNIBARB (/4-0) UNIBARB ( /8-0) UNIBARB ( /8-0) UNIBARB ( /8-0) UNIBARB ( /8-0) Exhaust Connection. /4-0 / Weight, lbs (kg) 4.5(.) 4.5(.) 40(8) 4(8) 4(9.5) 58.5(6.6) Overall Dimensions L in. (cm) 4.5(6.8) 4.(5.9) 8.5(47.) 8.5(47.) 8.5(47.) 0.5(5.) W in. (cm) 5.() 5.() 6.5(6.5) 6.5(6.5) 6.5(6.5) 7.(7.9) H in. (cm) 8.4(.) 8.4(.) 9.6(4.) 9.6(4.) 9.6(4.) 0.7(7.) Ship Weight, lbs (kg) 6(.8) 6(.8) 46() 46() 5(4) 68(0.8) Shipping Carton Dimensions x 6.5 x.5 x 6.5 x x 0.7 x x 0.7 x x 0.7 x.6 9 x.5 x 5.5 L x W x H in. (cm) (5. x 6.5 x 8.6) (5. x 6.5 x 8.6) (74 x 5.8 x 5) (74 x 5.8 x 5) (74 x 5.8 x 5) (7.7 x 9. x 9.4) 4, 5, 6. Ordering Information Catalog Number Wired for 5V, 60Hz, Ph 8890A 7, A 8907A 89A 897A 890A with N. American 5V Plug Wired for 0V, 50Hz, Ph 8890C-0 7, C C-0 89C-0 897C-0 890C-0 with Cont. Euro. (Schuko) Plug Wired for 0V, 60Hz 8. 89C-0 897C-0 with N. American 0V Plug Expl. Proof Motor 5V, 60Hz 897W Notes:. Models 8905, 8907, 89, 897, 890, and 895 should not be operated continuously at pressures above 0 Torr. Ultimate pressure measured with a trapped McCleod gauge.. UNIBARB : Convenient inlet barb connection accepts two sets of tubing ID (see page 8).. Model 8890 includes 47 filter, it is not included with any other model. 4. All single phase motors have overload protection 5. 5V, 60Hz models are CSA approved. 0

23 Drive Vacuum Pumps Accessories and Oil Exhaust Filter A replaceable filter element captures oil mist from the exhaust port of the pump and reduces pump noise. Pump Model Cat. No. 8890, , 89 47P P-7 890, P-0 890A 895A Exhaust Oil Recycler Use when pumping continuously above Torr. Captures oil mist from the pump, and returns collected oil to the pump via a gas ballast connection. SPECIAL APPLICATION SYSTEMS 895 Rotovap Pump 8. Freeze Dryer Pump 9..(0).() 6.(7) 6(67).6(6) 8.6(44) 4 x 0 4 (0.0005) x0 - (0.) x0-4 (0.000) /4(560) /4(90) /(70).(.) 0.48(0.45).4(.) 9/6, /6 /8 7/6, /6 (4, 0) (0) (, 0) UNIBARB ( /8-0) Barb (/4 in NPT) UNIBARB ( /8-0) -0 / (.) 7.5(.5) 55(5).(5.8) 4.5(6.8) 8.6(47.) 7.(7.9) 5.().5(9.) 0.7(7.) 4.(6.) 9.6(4.4) 77(4.6) 9(.) 70() 9 x.5 x x 4 x 4 9 x 9 x 5.5 (7.7 x 9. x 9.4) (9.4 x 9.4 x 9.4) (7.7 x 7.7 x 9.4) Pump Model Cat. No (GEM) 46B H 8907, 89, 897, 46C 890, 895 Dry Ice/Liquid Nitrogen Trap Recommended to protect pump from condensable vapors. Use either dry ice slurry or LN in the quart center well. See pgs. &. Pump Model Cat. No. 8890, 8905, 8907, 40H-4 89, 897, 890, 890 Premium Vacuum Pump Oil Higher viscosity formula that resists breakdown at higher RPM and temperatures of direct drive vacuum pumps. Size Cat. No. Liter 8995P- Gallon 8995P-5 5 Gallon 8995P-0 55 Gallon 8995P-5 895A 8890A A Gold Vacuum Pump Oil 895C C-7 897C W 6. 0V, 50 Hz models which are provided with CE mark. 7. Cat No. 46B Exhaust Oil Recycler is recommended when operating the GEM at pressures of Torr or higher. 8. Rotovap/Vacuum manifold pump see pages 7 and 8. Specially formulated oil for challenging applications. This highly saturated hydrocarbon oil is resistant to breakdown at higher temperature and is highly stable in chemical environments. Size Cat. No. Liter 8995G- Gallon 8995G-5 5 Gallon 8995G-0 55 Gallon 8995G-5 9. Freeze Dryer Pump see page Order 897C-80 and cord set 8906M for 0V, 60Hz, Ph.

24 CHEMSTAR Pumps For Corrosive Gases CHEMSTAR Vacuum Pumps For Pumping Corrosive Gases HCl O H SO 4 HBr HOAC SO x Br F CCO H H S Cl CH O HNO SF 6, CF 4 Fragments and other gases 40N-0 The Five Defining Features Needed For Pumping Corrosive Gases. High Contamination Tolerance Contaminants diluted Fewer moving parts Top oil feed for cleaner oil. Vital Parts Corrosion Resistant Fluoroelastomer seals and gaskets Metal vanes Stainless steel valves, etc. Teflon coated oil case. Reduced Frictional Wear Less than 580 RPM vs. typical 750 RPM direct drive Specifications. 4. Nitrogen Purge Standard Degases and cools oil 5. Easy Attachment of Accessories Complete accessory package for corrosive gases Welch Model 400N 40N 76N Free Air Displacement CFM L/min Ultimate Pressure, Torr(mbar). x0 4 (0.000) x 0 4 (0.000) x 0 4 (0.000) Gas Ballast Yes Yes Yes Pump RPM Motor Horsepower (watts) /(50) /(70) (750) Oil Capacity, qt. (liters) 0.6(0.59).5(.).5(.7) Tubing Needed, I.D. in. 7/6() /6() /6() ISO Exhaust & Intake Flange NW 6 NW 5 NW 5 Dimensions L x W x H in. (cm) 7.8 x 9 x.6 9. x 4. x x. x 5.6 (45. x.9 x ) (49 x 5. x 9.) (49 x. x 9.6) Weight, lbs (kg) 58(6) (5) 56(7) Ship Weight, lbs (kg) 68() 8(58) 77(8) Shipping Carton Dimensions 0.6 x.8 x x 5 x 8..4 x 7.7 x 8.9 L x W x H in. (cm) (5. x 5 x 6.5) (57.5 x 8 x 46.5) (59.5 x 45 x 48) Ordering Information,,5. Catalog Number Wired for 5V, 60Hz, Ph 400N-0 40N-0 76N-0 with N. American 5V Plug Explosion Proof Motor 400N N V, 60Hz, Ph Wired for 0V, 50Hz, Ph 400N-50 40N-50 76N-49 with Cont. Euro. (Schuko) Plug. Wired for 00V 50/60Hz, Ph 400N-5 40N-5 76N-5 for Japan Notes:. CHEMSTAR pump should not be operated continuously at pressures above 0 Torr. Ultimate pressure measured with a trapped McCleod gauge. 4. Hinged clamp, centering ring assembly and hose adapter are included with all CHEMSTAR Pumps... All single phase motors have overload protection. Conduit wiring installation required. No cord, plug or switch provided. 5. Standard filter option possible if the exhaust flange is removed, but not chemically resistant.

25 Protective Accessories For Corrosive Gases Protective Accessories For CHEMSTAR PUMPS Acid Neutralization Trap Hermetically Sealed Oil Mist Eliminator Oil Filtration System Heavy Corrosive Gas Loads Contaminated Exhaust Oil Mist Particulates In Gas Streams Acid Neutralization Traps The Acid Neutralization Trap contains a large alkaline element cartridge to neutralize hydrous acids before they enter the vacuum pump. The element changes from white to bluish-transparent when spent and can be observed through the transparent trap body. Dimensions: 40H-, 8 W x 9 H; 40H-0, 8 W x H. (See CHEMSTAR application booklet for specific recommendations for use.) CATALOG NUMBER PUMP CONNECTOR REPLACEMENT ISO SIZE CAPACITY TRAP KIT FOR TRAP. ELEMENT NW 6 To CFM 40H- 40K-6 40E-0 NW 5 To CFM 40H-0 40K-5 40E-0. Includes hinge clamp, centering ring and elbow. Use with CHEMSTAR vacuum pumps. Hermetically Sealed Oil Mist Eliminators Oil Filtration System When attached to an effective exhaust line, the hermetically sealed oil mist eliminator prevents corrosive vacuum pump exhaust gases from escaping into the room. It also coalesces oil mist from the pump exhaust and allows it to drain back into the pump. Coalescing the oil mist prevents loss of oil and the frequent need to add expensive vacuum fluids. Stainless steel construction with borosilicate microfiber element and flouroelastomer gaskets. Requires but does not include pump adapter kit. Dimensions of cat no. 46D: 5 W x 7-/4 H; 46F, 5 W x -/8 H. 46D exhaust port accepts /6 I.D. hose. CATALOG NUMBER USE WITH MIST PUMP REPLACEMENT PUMP MODEL ELIMINATOR ADAPTER KIT ELEMENT 400N 46D 46E-0 47Y-05 40N, 76N 46D 46E-0 47Y-05 Cat. No. 48G Description The Oil Filtration System provides another level of protection for CHEMSTAR pumps used for heavy loads of corrosive gasses or particles. Can also be used with DIRECTORR pumps where oil filtration is required. Oil is continuously removed, filtered and returned to the pump while it is operating. Recommended for use with DIRECTORR Gold vacuum oil. (See CHEMSTAR application booklet for use with Fomblin or other vacuum oils.) Includes cellulose element and connectors for installation to all CHEMSTAR models. Dimensions: W x 6 D x 0 H (7.9 x 5. x 5.4 cm). Weight: 8 lbs (8. kg), 5/0V, 50/60Hz, Ph. 48G-0 Replacement cellulose element for moderate particulate and acid contamination.

26 DUOSEAL Vacuum Pumps Rugged Belt Drive Long Service Life Due To Low Pump RPM In Demanding Applications Such As: Freeze Drying Concentrating Schlenk Line Degassing Vacuum Distillations Vacuum Drying 99N-0 400B-0 405B-0/40B-0 Specifications TWO-STAGE VACUUM PUMPS. Welch Model Free Air Displacement CFM L/min Ult. Pressure, Torr(mbar). x 0 4 (0.000) x 0 4 (0.000) x 0 4 (0.000) x 0 4 (0.000) x 0 4 (0.000) Gas Ballast Yes Yes Yes Yes Yes Pump RPM Motor Horsepower (watts) /(50) /(70) /(70) (750) (750) Oil Capacity, qt. (liters) 0.6(0.59).5(.).5(.).5(.4).5(.) Tubing Needed, I.D. in. 7/6() 7/6() /6() /6() -5/8(4) Intake, Nipple Thread / Exhaust, Thread Type / Weight, lbs (kg) 58(6) (5) (5) 56(7) 05(9) Overall Dimensions L in. (cm) 7.8(45.) 0(5) 0(5) 0(5) 6(66) W in. (cm) 9(.9) (0.5) (0.5) 4.(5.9).7(4.8) H in. (cm).6(.) 5(8.) 5(8.) 5.4(9) 8.8(47.6) Ship Weight, lbs (kg) 68() 8(58) 8(58) 77(8) 4(0) Shipping Carton Dimensions 0.6 x.8 x x 5 x 8..6 x 5 x 8..4 x 7.7 x x 6. x 0.9 L x W x H in. (cm) (5. x 5 x 6.5) (57.5 x 8 x 46.5) (57.5 x 8 x 46.5) (59.5 x 45 x 48) (70.6 x 4. x 5) Ordering Information,4. Catalog Number Wired for 5V, 60Hz, Ph 400B B B B-0 97B-0 with N. American 5V Plug Wired for 0V, 60Hz, Ph 400C-0 405C-0 40C-0 with N. American 0V Plug Wired for 0V, 50Hz, Ph 400C-0 405C-0 40C-0 76C-0 97C-0 w/cont. Euro. (Schuko) Plug Explosion Proof Motor, 400W W W V, 60Hz 4 -Phase Motor 0V, 40M-0 76M-0 97M-0 460V, 60Hz Notes:. Two-stage pumps should not be operated continuously at pressures above 0 Torr. Ultimate pressure measured with a trapped McCleod gauge.. One-stage pumps should not be operated continuously at pressures above 50 Torr.. All 5V and 0V single phase motors include thermal overload protection. 4. Models 400C-0, 405C-0 and 40C-0 provided with CE marking.

27 V acuum Pumps Accessories and Oil Exhaust Filter A replaceable filter element captures oil mist from the exhaust port of the pump and reduces pump noise. Pump Model Cat. No. 99, , 40, P-0 97, 74 47P-0 76B-0 97B-0/74B-0 ONE-STAGE VACUUM PUMPS. w/o plate w/bell jar plate N x 0 4 (0.000).5 x 0 (0.09).5 x 0 (0.09) Yes No No /(0) /(50) /(50).5(.) 0.5(0.47) 0.5(0.47) -5/8(4) 7/6() 7/6().75-0 /4-0 / /4-0 /4-0 Exhaust Oil Recycler Use when pumping continuously above Torr. Captures oil mist from the pump and returns it to the pump via a gas ballast connection. Pump Model Cat. No H-0 76, 40, C-0 Dry Ice/Liquid Nitrogen Trap Recommended to protect pump from condensable vapors. Use either dry ice slurry or LN in the quart center well. See pgs. 8 & 9. Pump Model Cat. No. 400, 405, 40, 40H-4 76, 99 0(00) 5() 5() 6(66) 7(4.) 7(4.).7(4.8) 9(.9) 9(.9) 8.8(47.6) 0(5.4) 0(5.4) (05) 6(8) 6(8) 7.8 x 6. x x.8 x x.8 x 4.4 (70.6 x 4. x 5) (5. x 5 x 6.5) (5. x 5 x 6.5) DUOSEAL Vacuum Pump Oil Tested to high vacuum levels, this oil meets rigid requirements for vapor pressure, stability, and viscosity. Size Cat. No. Quart 407K- Gallon 407K-5 5 Gallon 407K-0 55 Gallon 407K-5 74B B-0 99N-0 74C C-0 74M-0 5. Conduit wiring installation required. No cord, plug or switch provided. 6. CSA approved models are 400B-80, 405B-80 and 40B-80. Gold Vacuum Pump Oil Specially formulated oil for challenging applications. This highly saturated hydrocarbon oil is resistant to breakdown at higher temperature and is highly stable in chemical environments. Size Cat. No. Liter 8995G- Gallon 8995G-5 5 Gallon 8995G-0 55 Gallon 8995G-5 5

28 House Vacuum Systems Providing Vacuum to Multiple Labs Within A Research Facility Available in: Horizontal or vertical mounted systems One to four pump configurations Up to 9.9 in. Hg(0. Torr) Modular/Expandable designs Proven reliable in lab applications Vertical Mounted System Horizontal Mounted System Standard Packaged Systems are ideal for many laboratory applications and provide an unbeatable combination of economy, reliability and quick delivery. They come in oil-sealed rotary vane and oil-free designs; simplex (one pump only) through quadraplex (four pump) configurations, and can be modified to meet any requirements. Aggressive, toxic or sensitive vapors and gases typically require a custom solution, including special controls and accessories. Safeguarding the environment is often a determining factor in pump selection. We are particularly strong in this area. A house vacuum system is selected when a number of labs in a research facility require vacuum as a standard utility in hoods or on lab benches. An installation consists of one pump (simplex) to four pumps (quadraplex) connected to a vacuum receiver which maintains a consistent vacuum level at all times. The tank acts as a ballast and a receiver to prevent any liquid accidentally entering the pump(s). The tank connects to a manifold of pipes running through the facility. Each pipe terminates in a lab and then branches off to vacuum stopcocks at each hood or bench location. Multi-pump systems are chosen when many vacuum stopcocks are simultaneously open or no down-time is allowed. In addition, a multi-pump system reduces operating time on individual pumps thus increasing pump lifetime while also providing installed back-up capacity. This guarantees you will stay online. Systems (/-50 Hp) are available with a wide capacity and vacuum range. Individual vacuum pumps provide up to 98 CFM (6,000 L/min) and vacuum to 0. Torr(0. mbar or 9.9 in. Hg). You can choose an engineered package system to meet your most rigorous requirements. Our engineering and design staff has a wealth of experience designing custom systems for chemical, pharmaceutical, biotech, and life science laboratories. We specialize in hybrid systems, exotic chemicals, and difficult applications. In U.S.A. and Canada, please call ( ) or (welchvacuum@thomasind.com) Welch technical service with your needs and we will get back with you with advice and followed up with a proposal. For other countries, contact your nearest Rietschle Thomas sales office (See listing of offices on back cover). Typical Scope of Supply Vacuum Pump(s) Hour Meters and Running Lights TEFC Motor(s) Welded Steel Frames NEMA 4/ Control Panel ASME Coded Receiver Magnetic Starters with O/L Protection Check Valves Programmable Logic Controller Isolation Valves Control Voltage Transformer Flexible Connections Hand-Off-Auto Switch Vacuum Gauge & Switches 6

29 Automatic Vacuum Controller Distillation Controller for Rotary Evaporator Features: Vacuum control to ± Torr Corrosion resistant construction No mercury - 00% solid state Three-position controller switch Ramp-to-set point > 99% solvent recovery 600B-0 The automatic vacuum controller (AVC) is an economical, easy-to-use solid state device for controlling vacuum level in any brand of rotary evaporator. The controller maintains a selected set-point with a digital read-out of the pressure in Torr (mm Hg). Vacuum level may be set from Torr to atmospheric pressure. The vacuum controller is compatible with any vacuum source from a water aspirator, PTFE diaphragm pump, house vacuum or oil-sealed rotary vane pump. The controller consists of three key components all located within the controller housing. Stainless steel pressure sensor measures the pressure in the rotary evaporator. Process controller compares reading from the sensor with the pressure set point entered. Stainless steel solenoid control valve controller signals valve to open above pressure set point and close. The controller is easy to set up. First, connect the vacuum source to the hose connector /4 in. (7mm) I.D. marked inlet and then connect the rotary evaporator to the /4 in. (7 mm) I.D. hose connector marked outlet. Set-up is now complete.. Dimensions: 8.75 L x 5.4 W x.6 H (. x.7 x 9. cm). Weight:. lbs. (.5 kg). The controller is available with a built in serial communication card (RS) for data logging and control from a remote PC. Windows software (cat. no. 70A) is needed to run the vacuum pressure display, logging and remote control from a PC. The controller allows the user to set a specific rate for evacuation to be entered. To illustrate, the user can reduce the pressure to 0 Torr in a rotary evaporator at a rate of 0 Torr/hour. Coupled with this ramp-to-set point feature, the user can also specify how long to stay at that pressure before closing off the vacuum source to the rotovap. The controller coupled with a dry ice condenser assembly (or using a secondary dry ice trap with a tap-water-cooled condenser) allows solvent recoveries of > 99% in the receiving flask for low to high boiling solvents. CAT. NO. DESCRIPTION. 600B-0 AVC Distillation Controller, 5V, 60Hz 60B-0 AVC Distillation Controller with built in serial communication card, 5V, 60Hz 70A Required with Model 60, Windows software for vacuum pressure display, logging and remote control 40H-6 Glass secondary cold trap, accepts /4 in. (7mm) ID hose, L round bottom flask Note:. If a dry ice condenser is not used with the rotary evaporator, a secondary dry ice cold trap is recommended. The cold trap prolongs the life of both the vacuum controller and the pump. Dry ice trap cat. no. 40H-6 comes without ring stand. Mounts to scaffolding or stand. Typical Solvent Recovery Efficiencies with Dry Ice Condenser. Solvent. Pressure, Torr Bath Temp., C Solvent Recovery Ether > 99% Methylene Chloride 00 0 > 99% Ethyl Acetate 90 5 > 99% Toluene > 99% Note:. Solvent sample sizes are between 00 to 450 grams and are taken to dryness. 40H-6. 7

30 Vacuum System Connectors & Tubing ISO NW Inlet Connectors for High Vacuum Pumps Stainless steel with o-ring No sealant required for installation For pumps above listed serial number B PUMP ISO THREAD SIZE MODEL SERIAL NO. B CAT. NO. NW 6 / >646. 9F NW 6 / , 400N > F NW > G NW >4. 9G NW , 40N >8. 9G NW , 76N > G NW > H NW >57.4 9H NW 6 / All. 8905K-05 NW 5 / , 89, 897, All K , 895 Exhaust Connectors for High Vacuum Pumps For adding an exhaust line to a pump Connectors for vacuum hose and ISO NW Hose Connector ISO Connector A HOSE CONNECTOR ISO CONNECTOR PUMP MODELS HOSE I.D. CAT. NO. THREAD SIZE ISO NW A CAT. NO. 99, 400, 8905, /6 9J /4-0 NW 6. 9F 40, 80, 76, 890, /6 9K -0 NW 5. 9G 895, 8907, 89, 897, , 97-5/8 9L /4-0 NW H 405, 40 7/6 9M -0 NW 5. 9G UNIBARB Inlet Connectors For High Vacuum Pumps Accepts two sets of tubing ID Aluminum With inlet screen THREAD SIZE PUMP MODEL Hose I.D. CAT. NO. / , 99, 8905 /6 & 7/6 8905K-06 / , 89, 897 7/6 & /6 8907K-06 / , 895, 897 9/6 & /6 890K-06 Brass Hose Barb Brass For use with ISO to female pipe adaptors HOSE BARB THREAD HOSE. I.D. CAT. NO. /4 /4 NPT /6 and /8 9X 9X Dimensions are in inches 8

31 Vacuum System Connectors & Tubing Male NPT Pipe Inlet And Exhaust Adapters Black Pipe Adapt inlet and exhaust to NPT Thread PUMP MODEL MACHINE THREAD NPT MALE THREAD CAT. NO. 400, 99 /4-0 / 9N 80, 40, 76, /4 9P Red Vacuum Hose Hose Clamps Very thick walled hose for vacuum or pressure applications Quick-acting clamp tightened by a thumbscrew actuated worm screw Hose comes in 5 ft. lengths(.5m) SPECIFICATIONS HOSE KIT CAT. NO. CLAMPS CAT. NO. I.D. WALL O.D. THICKNESS 5ft only 0ft only 5ft only 0ft only 5ft only 0/pkg. /6 5/6 / /4* /4 / /6 5/6 -/ /8 /8 -/ /6 /8-9/ /8 / *Hose works with pumps that accept /8 in. I.D. hose. Hinged Clamps B Aluminum Closure by wing and nut bolt ISO A B CLAMP WIDTH CAT. NO. NW NW NW A Centering Assemblies Replacement O-Rings A Centering Ring Assembly C O-Ring B Stainless steel centering ring with o-ring Replaceable Viton o-ring seal CENTERING RING ASSEMBLY REPLACEMENT O-RING ISO A CAT. NO. B C CAT. NO. NW NW NW Rubber Hose Adapters ISO NW to rubber vacuum hose Aluminum B A ISO HOSE I.D. A B CAT. NO. NW 6 7/ NW 6 5/ NW 5 / NW 40-5/ Dimensions are in inches 9

32 Vacuum System Connectors & Tubing Female Pipe Adapters Flat Female stubs have /8 in. to /4 in. NPT Stainless steel Can be used with many gauge probes including Welch No. 55A and 56A (see page ) Can be used with brass hose barbs (see page 5) B A ISO NPT A B CAT. NO. NW 6 / NW 6 / NW 5 / NW 5 / NW 5 / Male Pipe Adapters Male stubs have /8 in. to /4 in. NPT Hex shank Stainless steel A B ISO NPT A B CAT. NO. NW 6 / NW 5 / NW 5 / NW 5 / NW 5 / Blank-Off Flanges Stainless steel To close off unused parts B ISO B CAT. NO. NW NW º Elbows Stainless steel Same size flange on both ports A ISO A CAT. NO. NW NW A Tees Stainless steel Same size flanges on all ports A ISO A CAT. NO. NW NW A Reducers F.57 F A Makes differing sizes of ISO flanges Stainless steel ISO F ISO F A CAT. NO. NW 5 NW NW 40 NW NW 40 NW Dimensions are in inches

33 Exhaust Filters & On/Off Foot Switch Standard Exhaust Filters Filters oil mist from pump exhaust Easy replacement of element Reduces pump noise Filters to 0. micron particle size Screw-in type 47 47P-0 STANDARD EXHAUST FILTERS DIMENSIONS CATALOG NUMBER REPLACEMENT USE WITH PUMP MODEL DIAMETER HEIGHT FILTER ELEMENT 8890., 8905, 99, L 400, 400N 8907, P 47Q P-7 47R 890, 895, 76, P-0 47G 405, 40N, 76N 97, P-0 47H-0 897A-80 40E-0. GEM (8890) includes 47 as standard equipment. Directional Exhaust Filters Large, high capacity 60 Swivel outlet with tubing connector Screw-in type DIRECTIONAL EXHAUST FILTERS DIMENSIONS CATALOG NUMBER USE WITH OUTLET GASKET PUMP MODEL DIAMETER HEIGHT TUBE O.D. FILTER ELEMENT REPLACEMENT 8907, 89, 897, 890, A 47G 47A-0 895,76,80, 40, 405, 40N, 76N 74, B 47H 47B-0 Exhaust Oil Recycler Exhaust oil recyclers are recommended for vacuum systems with continuous pressure of Torr ( mm Hg) or higher.. At these pressures, conventional exhaust filters quickly saturate. The Mist Eliminator System continuously separates oil mist from the vacuum pump exhaust and actively returns the oil to the pump. Exhaust Mist Eliminator shown installed on pump with oil return line. CAT. NO. VACUUM PUMP MODEL NO. 46B 8890 (GEM) 46H C 8907, 89, 897, 890, H-0 400, 400N 46C-0 76, 76N, 40, 40N, 405. CAUTION: Two stage vane vacuum pumps such as models 8905, 8907, 89, 890, 897, 895, 400, 40, 76, 405, 400N, 40N and 76N should not be operated continuously at pressures above 0 Torr. On/Off Foot Switch Hands free On/Off pump operations No adapters or special connections needed Plugs directly into the power source outlet On/Off foot switch is compatible with selected dry vacuum pump models operating on 5V, 60Hz, Ph. Switch handles up to 5 amps. Comes with -prong U.S. Standard plug with 8 Ft. Cord, CSA, NEMA & UL Enclosure Type. PUMP MODEL CAT. NO. 00, 0, 0, 00, 05, 07, 40A 0, 0, 5, 5, 54, 546, 56, 567, 58, 585 Dimensions are in inches

34 Foreline Trap Selection Foreline Traps For protection against contaminants in vacuum systems Foreline traps are used to prevent harmful substances generated or resident in vacuum systems from damaging vacuum pumps. Particulates can become lodged in a pump mechanism causing physical damage. Vapors can condense to liquids within the vacuum pump as a natural result of gas compression. Liquid water, solvents and acids can cause serious damage to a vacuum pump mechanism. (Refer to CHEMSTAR, pages 6 and 7 for work with corrosive gases). Foreline traps are also used to prevent oil backstreaming, the migration of oil molecules from vacuum pumps back into vacuum systems causing contamination of those systems. This is more likely to occur at vacuum levels of x 0 Torr (. x 0 mbar) or deeper that are maintained continuously over long periods of time. TRAP SELECTION TABLE Effectiveness Rating: *** Very Good ** Good * Fair N/R Not Recommended COAXIAL ACID NEUTRALIZATION COLD TRAP TRAPS TRAPS Stainless Steel Calcium Hydroxide Dry Ice Liquid Element Slurry Nitrogen TRAP APPLICATIONS Prevent Oil Backstreaming ** N/R *** *** Trap Water Vapor N/R N/R *** *** Trap Organics. N/R N/R *** *** Trap Acidic Vapors N/R *** * *** TRAP MAINTENANCE Time Interval To Replace Six Depends on Acid Element Months Vapor Load Need Only Clean Trap No No Yes Yes Refrigerant Hold Time 4 to 4 (Hours with no load) TRAP CHARACTERISTICS Trapping Mechanism Room Room Operating Temperature Temp Temp -79ºC -98ºC Limiting Pressure (Torr) Can Lower Pump Base Pressure Yes Yes Note:. Examples: paraffins, solvents, organic acids, alcohols. Application Note for Cold Traps Cold traps employing a dry ice slurry or liquid nitrogen are effective as long as the refrigerant level is maintained. If the trap warms up while the pump is running, all of the trapped condensables will be ingested by the vacuum pump, contaminating the oil. Cold traps must be cleaned out at the end of each day. If the pump is run overnight, the trapped condensables will ultimately be ingested by the pump as the trap warms up. Cleaning a Dry Ice Slurry/Liquid Nitrogen trap is easy. The steps are:. Turn off the pump;. Leak air into the trap;. Remove the center well and plexiglass ring to a hood. The center well can be washed off into a beaker or the condensables can be allowed to evaporate in the hood.

35 Foreline Traps & Hose Adapter Kits Dry Ice/Liquid Nitrogen Trap Hose barb connection accepts 7/6 in. ( mm) I.D. hose Removable quart center well for dry ice/isopropyl alcohol slurry (do not use acetone) or liquid nitrogen Visible trapping surface Cold temperature up to hours depending on vapor load with dry ice slurry Cold temperature up to hours depending on vapor load with liquid nitrogen TUBING IN/OUT TRAP REPL. SEAL NEEDED DIAM. HEIGHT DIAMETER OFFSET CAT. NO. CAT. NO. 7/6 I.D H Tubing cat. no Coaxial Traps ISO NW flange connection Reduces oil backstreaming Stainless steel construction Easy replacement of elements Element must be ordered separate from trap ISO SIZE CAPACITY DIAM. HEIGHT. CAT. NO. NW 6 To 4 CFM (40 L/min) NW 5 To CFM (40 L/min) Stainless steel element for ISO NW 6 Trap 549 Stainless steel element for ISO NW Distance between ISO NW inlet and outlet connections. Acid Neutralization Trap ISO NW flange connection Calcium Hydroxide element Element changes from white to bluish-transparent when spent CATALOG NUMBER ISO REPLACEMENT PUMP CONNECTOR SIZE CAPACITY TRAP ELEMENT KIT FOR TRAP. NW 6 To CFM (57L/min) 40H- 40E-0 40K-6 NW 5 To CFM (40L/min) 40H-0 40E-0 40K-5. Includes hinge clamp, centering ring and elbow. Use with CHEMSTAR vacuum pumps. Hose Adapter Kits Hose Adaptors Hose Valves Kits ensure proper sized tubing adaptors, and clamps for vacuum tight connections Kits include at least 5 ft(.5m) of thick walled rubber vacuum hose ADAPTER KITS APPLIANCE FOR PUMP MODELS PUMP INLET O.D. CONNECTOR O.D. CAT. NO (GEM) /8 /4 and /8 40H (GEM) /8 7/6 and / 40H-0 400, 405, 99, /6 /4 and /8 40H-0 40, 80, 8907, 89, 897, 890, 895 /6 /4 and /8 40H-0 40H-0 Dimensions are in inches

36 Vacuum Pump Oils & Oil Change System Gold Vacuum Pump Oil Exceptionally low vapor pressure High stability in chemical environments No additives or inhibitors Recommended for Welch belt-drive and direct-drive pumps A double distilled synthetic hydrocarbon oil is designed for excellent resistance when pumping corrosive gases or vapors. A synthetic base stock has no aromatic compounds or sulfur which accelerate varnishing, sludging and carbon build-up when pumps are used to pump corrosives. Gold oil will give a longer service live and superior protection for the internal metal components of a pump in corrosive pumping applications compared to DUOSEAL and Premium Oil. Gold Oil offers excellent vacuum pressure in both belt-driven and direct-driven vacuum pumps over time. Gold Oil is miscible with conventional hydrocarbon oils and can be used without rebuilding the pump. The oil is clear and colorless. CAT. NO. 8995G- 8995G G G-5 SIZE Liter Gallon 5 Gallon 55 Gallon Premium Vacuum Pump Oil Low vapor pressure Designated for high RPM direct drive vacuum pumps No additives or inhibitors Recommended for Welch direct-drive vacuum pumps A triple-distilled hydrocarbon oil using severely hydrotreated base stock is designed to resist breakdown at higher RPMs and operating temperatures of direct-drive vacuum pumps. The hydrotreating virtually eliminates aromatics and sulfur to give good resistance to sludge and varnish formation overtime in corrosive environments. DIRECTORR Premium enables direct-drive vacuum pumps to maintain the highest vacuum performance over time. The oil is light yellow. CAT. NO. 8995P- 8995P P P-5 SIZE Liter Gallon 5 Gallon 55 Gallon DUOSEAL Vacuum Oil Low vapor pressure Ideal viscosity for belt-drive vacuum pumps High consistency Recommended for DUOSEAL belt-drive pumps A specially fractionated oil for DUOSEAL belt-driven pumps is designed to ensure the highest vacuum performance. The oil is tested to high vacuum levels to meet rigid requirements for vapor pressure, vacuum level stability, and viscosity. DUOSEAL oil is famous for its quality and consistency. CAT. NO. 407K- 407K-5 407K-0 407K-5 SIZE Quart Gallon 5 Gallon 55 Gallon QUICKCHANGE Oil Change System Easy to use Pumps into container for easy disposal Eliminates spillage Drains pump oil in seconds A complete oil change system. Includes suction pump and two containers, all in one convenient package. Saves time and eliminates mess during a pump oil drain. It is easy to use. Insert the suction hose into the vacuum pump s oil fill port (Models 8890, 8905, 890 and 895 require a drain valve kit, cat. no. 575, not supplied), turn on the suction pump, and in seconds all of the pump s oil is transferred to a collection reservoir for easy disposal. A check valve closes when the collection reservoir is full. Includes two L containers and ft ( m) of connecting hose, in a sturdy plastic case with carrying handle. Overall dimensions: W x 0 L x H in. (0.5 x76.x0.5 cm). Weight: 0 lbs(4.5 kg). CAT. NO. VOLTAGE Drain valve kit needed for models 8905, 890, V, 60Hz, Ph 575 4

37 Vacuum Regulators, Vacuum Gauges & Service Kits Vacuum Regulator (Bench Mount) PUMP MODEL CAT. NO. 00, 0, 0, 00, 05, 07 4A 0, 0, 56, 567, 58, 585 Connects to pump intake via hose for easy regulation of vacuum level. Position on bench top. Corrosion resistant construction. Requires /4 in. (7 mm) ID hose (cat. no. 00-5). CAUTION: Do not use with DUOSEAL, CHEMSTAR or Direct-Drive pumps. Vacuum Regulator (Pump Mount) PUMP MODEL CAT. NO. 0, 0, 00, 05 4D 07, 00, 0, Replaces inlet barb and allows easy regulation of vacuum level. Includes an easy to read dial gauge. Cat. No. 4D-All stainless steel construction. Cat. No. 4-Brass Construction. Dial Vacuum Gauge Dial Diameter Units of Measure Connection CAT. NO. in. O.D. in. Hg, cm Hg (Brass) /8 male NPT 760 in. O.D. Pascal (Brass) /8 male NPT in. O.D. in. Hg, mm Hg (Brass) /4 male NPT 7600 in. O.D. in. Hg, mm Hg (Stainless) /8 male NPT 760 Inexpensive gauge for measuring vacuum level. Not an absolute pressure gauge. Gauge uses atmospheric pressure as reference. Thermocouple Vacuum Gauges Vacuum measurement to low millitorr (micron) range Rugged, reliable thermocouple gauge sensor tube Gauges provide an accurate, reliable measurement of vacuum. Self-contained gauges with solid-state electronics for rapid response time, long life and low maintenance. Come with 0 to 0 VDC recorder output. The gauge sensor tubes are designed to assure maximum sensitivity over the entire vacuum range. Gauge sensor tube connected to system via /8" NPT thread. Each gauge comes with one sensor tube and one cable. Dimensions of 7 L x 5 D x 5.6 H (7.8 x.7 x 4.); Weight lbs(0.9 kg). Standard Duty Dry Piston Pumps Gauge Protective Trap Replacement Sensor Tube CAT. NO. Range(millitorr) Voltage CAT. NO. CAT. NO to V, 60Hz Ph 55B 55A Pump Model Kit No. Description 5 5K-0 Service Kit 5K-0 One Head Service Kit, K-0 Service Kit 54K-0 One Head Service Kit, K-0 Service Kit 546K-0 One Head Service Kit, 545 5, 54, 546 5K-04 Seal Service Kit, 5, 54, 545 5K-05 Vacuum Reg Kit, 5, 54, 545 5K-06 Pressure Reg Kit, 5, 54, , K-0 Connecting Rod Assembly 585K-0 Valve Plate Assembly 585K-0 Two Head Service Kit, K-04 Seal Service Kit, / K-0 Two Head Service Kit, K-04 Seal Service Kit, K-0 Two Head Service Kit, 56 56K-04 Seal Service Kit, K-0 Two Head Service Kit, 58 58K-04 Seal Service Kit, 58 All Models WOB-L Dry Pump 500K-04 Service Kit for Feet 5

38 Service Kits Chemical Duty Dry PTFE Diaphragm Pumps Pump Model Kit. No. Description 00 00K-0 One head service kit 0, 05, 0 0K-0 One head service kit, S/N <EG K-0 One head service kit, S/N >EG , 04, 00 05K-0 One head service kit K-0 One head service kit 05K-0 Tubing service kit for 050, S/N <EC K-06 Tubing service kit for 050, S/N >EC0900 0, 0 07K-0 One head service kit 060, K-0 One head service kit 05K-06 Tubing service kit GELMASTER Vacuum System Pump Model Kit No. Description K-0 Diaphragm repair kit 46K-0 Major repair kit DUOSEAL Vacuum Pumps Pump Model Kit No. Description K-0 Minor repair kit, K-04 Major repair kit, K-05 Minor repair kit, 40 40K-06 Major repair kit, K-05 Minor repair kit, K-06 Major repair kit, K-05 Minor repair kit, 76 76K-06 Major repair kit, 76 97, 74 97K-07 Minor repair kit, 97 & 74 97K-08 Major repair kit, 97 & K-0 Minor repair kit, 99 99K-04 Major repair kit, 99 CHEMSTAR Vacuum Pumps Pump Model Kit No. Description 400N 400K-09 Minor repair kit, Chemstar 400N 400K-0 Major repair kit, Chemstar 400N 40N 40K-09 Minor repair kit, Chemstar 40N 40K-0 Major repair kit, Chemstar 40N 76N 76K-09 Minor repair kit, Chemstar 76N 76K-0 Major repair kit, Chemstar 76N Direct-Drive Vacuum Pumps Pump Model Kit No. Description K-0 Minor repair kit, K-0 Minor repair kit, K-0 Shaft seal repair kit, , 89, K-04 Minor repair kit, 8907, 89, K-05 Shaft seal repair kit, K-0 Minor repair kit, K-0 Minor repair kit 895 6

39 Pumping Speed Curves 8890, 8905, 890, , 89, 897 Pumping Speed, Liters Per Minute Hz Cubic Feet Per Minute Pumping Speed, Liters Per Minute Hz Cubic Feet Per Minute Pressure, Torr Pressure, Torr 400, 400N,405,40,40N 76, 76N,97, & 60Hz & 60Hz 50 Pumping Speed, Liters Per Minute & 40N & 400N Cubic Feet Per Minute Pumping Speed, Liters Per Minute & 76N Cubic Feet Per Minute Pressure, Torr Pressure, Torr 0, 0, 00, 0 56, 567, 58, 585 Pumping Speed, Liters Per Minute Hz Cubic Feet Per Minute Pumping Speed, Liters Per Minute Cubic Feet Per Minute Pressure, Torr Pressure, Torr 7

40 Product Directory by Chemical Duty Dry Vacuum Pumps & Systems PTFE (Polytetrafluoroethylene) construction for aggressive gases and vapors Oil-free operation Diaphragm mechanism Model Free Air Displacement Ultimate Pressure, Page (Type) 60Hz Torr(mbar) (.7) 0(46) 6 (Pump) () 00() 6 (Pump) () 9() 6 (Pump) () (.7) 6 (Pump) 00.() 9() 6 (pump) 0.() (.7) 6 (pump) 06.() (.7) 7 (Dial Vacuum Read-out System) 07.() (.7) 7 (Digital Absolute Vacuum Read-out System) 05.(4) 9() 7 (Dial Vacuum Read-out System) 05.8(50) 80(06) 7 (pump) 07.(64) 80(06) 7 (pump) Standard Duty Dry Vacuum Pumps Aluminum construction for pumping vapors of aqueous solutions including buffers Oil-free operation WOB-L piston mechanism Model Free Air Displacement Ultimate Pressure, Maximum Deliver Page (Type) 60Hz Torr(mbar) Pressure, PSIG(pascal) 5 0.9() 9(9) (. x 0 5 ) 8 (Pump) () 00() 00(0 6 ) 8 (Pump w/liquid trap, silencer, pressure & vacuum regulators) 54.(4) 70(9) 50(5 x 0 5 ) 8 (Pump w/liquid trap, silencer, pressure & vacuum regulators) 546.6(45) 60(80) 00(0 6 ) 8 (Pump w/liquid trap, silencer, pressure & vacuum regulators) 56.(60) 5(6.7) 0 8 (Pump w/liquid trap, silencer, vacuum regulator) 58.5(00) 5(6.7) 0 9 (Pump w/liquid trap, silencer, vacuum regulator) 567.5(00) 60(80) 0 9 (Pump w/liquid trap, silencer, vacuum regulator) (0) 60(80) 0 9 (Pump w/liquid trap, silencer, vacuum regulator) Horizontal or vertical mounted systems One to four pump configurations Up to 9.9 in. Hg(0. Torr) Modular/Expandable designs Proven reliable in lab applications House Vacuum Systems (See page 6 for details) 8

41 T ype, Flow & Vacuum. Vacuum to x 0-4 Torr (. x 0-4 mbar) Free-air displacement from to 0 L/min Oil-lubricated rotary vane direct-drive mechanism Compact Direct-Drive High Vacuum Pumps Model Free Air Displacement Ultimate Pressure, Page (Type) 60Hz Torr(mbar) 8890.() x0 - (.x0 - ) (5) x0 - (.7x0 - ) (7) x0-4 (.x0-4 ) (08) x0-4 (.x0-4 ) (7) x0-4 (.x0-4 ) (8) x0-4 (4x0-4 ) 895.(0) 4x0-4 (5.x0-4 ) Rotovap Pump.() x0 - (.x0 - ) Freeze Dryer Pump 6.(7) x0-4 (.x0-4 ) High contamination tolerance Vital parts corrosion resistant Oil-lubricated rotary vane belt-drive mechanism CHEMSTAR Pumps for Corrosive Gases Model Free Air Displacement Ultimate Pressure, Pages (Type) 60Hz & 50Hz Torr(mbar) 400N 0.9(5) x0-4 (.x0-4 ) 40N 5.6(60) x0-4 (.x0-4 ) 76N 0.6(00) x0-4 (.x0-4 ) Rugged DUOSEAL Belt-Drive High Vacuum Pumps Vacuum to x 0-4 Torr (. x 0-4 mbar) Free-air displacement from 8 to 650 L/min Oil-lubricated rotary vane belt-drive mechanism Model Free Air Displacement Ultimate Pressure, Page (Type) 60Hz Torr(mbar) (5) x0-4 (.x0-4 ) 4 99.(5).5x0 - (.9x0 - ) 5 99N.(5).5x0 - (.9x0 - ) 5 (w/bell jar plate) 405.(90) x0-4 (.x0-4 ) (60) x0-4 (.x0-4 ) (00) x0-4 (.x0-4 ) (500) x0-4 (.x0-4 ) 4 74 (650) x0-4 (.x0-4 ) 5 Note:. Product specifications within this catalog are subject to change without notification. 9

42 Index of Catalog Numbers Cat. No. Page No. Cat. No. Page No. Cat. No. Page No. Cat. No. Page No B 9 050,4,, B-0 5 4C 9 050,4,, C-0 5 4D ,4,, M-0 5 4E 9 05K B 5 05K B C 9 05K C B, 060, K C, 070,4, K C-0 5, 070,4, K D 0705,4, K E-0 07K M E-0 00B N 46H, 00C N-0 46H-0 5, 00C N-50 47,5, 0B N-5 47A 0C F 8 47A-0 0C G 8 47B 500K H 8 47B-0 5B J 8 47G 5C K 8 47H 5C L 8 47H-0 5, 5B-0,0, N 9 47L 5C-0,0, P 9 47P, 5C-0,0, X 8 47P-0,5, 5C-05,0, P-0 5, 5K B P-7, 5K C Q 5K K R 5K K Y-05 5K M B-0 0, G 54C-0 0, ,9 99B G-0 54C-0 0, C E-0 54K K E-0 54K K H-0 546B-0,4,0,, N H-0 546C-0,4,0,, , H- 546C-0,4,0,, ,5 400B-0 7,8,,4 40H-4 4,,,5, 546K ,5 400C H-0, 546K ,5 400C-0 7,8,,4 40H-, 56B A 0 400K K-6 56C A-70,4,7,8,0 400K K-5 56C C K K C-7,4,7,8,0 400K-0 6 4D 5 56K K N 4A 5 567B-50,4,0,,9 8905A 0 400N-0 4B 7 567C-50,4,0,,9 8905C N ,4, 567K K N-5 460,4, 567K K N ,4, 58B-50,4,,4,5,8 8907A,0 400W ,4, 58C-50,4,,4,5,8 8907C-0, ,4, 58C-56,4,,4,5,8 89A 5,0 40B-0,,4,4 46K K C-0 5,0 40C K K K C-0,,4,4 40D 585B-50 4,0,9 897A 0 40K C-50 4,0,9 897A-80,9, 40K A 5 585K C K B 5 585K C-80,9, 40K B-0 4,0,6 585K K M C-0 4,0,6 585K K N 00K W 0 40N-0,9, 0B-0,0, A 0 40N-50,9, 0C-0,0, C N-5 05B-0 0,, A 40N-90 05C-0 0,, C-0 40W C-05 0,, K B-0, 0, W 405B-0,4 07C-0, 0, C C-0,4 07C-05, 0, G-,5,4 405K B-0, G-5,5,4 405K C-0, G-0,5,4 405W-0 4 0C-05, G-5,5,4 407K- 5,4 0B P-,4 407K-5 5,4 0C P-5,4 407K-0 5,4 0C P-0,4 407K-5 5,4 0K P-5,4 4A 9 050,4,, House Vacuum 6 40

43 Ordering, Service & Trademarks HOW TO ORDER From Welch Dealers: Welch Rietschle Thomas products can be ordered from authorized laboratory dealers. Please check the Welch web site at or call ( ) or fax for a list of Welch dealers in the United States, Canada, and other locations. From Welch in the U.S.A and Canada: To order your vacuum pumps, parts and accessories: welchvacuum@thomasind.com Fax: From Rietschle Thomas sales offices. See country directory on back cover Mail: Welch Rietschle Thomas 49 Illinois Ave. P.O. Box 9 Sheboygan, WI Payment Terms: Net 0 days with approved credit; Mastercard, Visa or American Express are accepted for your convenience. Minimum Order: $50.00 TECHNICAL ASSISTANCE Call: (847) welchvacuum@thomasind.com Fax: (847) Online: WELCH REPAIR SERVICE For warranty or non-warranty repairs, a RA number is needed prior to returning product for inspection. All paid repairs come with a new pump warranty. All returns must come with a P.O. with approved credit or credit card number. An RA number is obtained by filling out a safety service form located on the Welch web site,. A Welch customer service representative will then call or fax you with the RA number and shipping instructions. The reason for the safety service form is that it contains information on what chemicals may have been ingested into the pump during its use. Worker safety rules require this information prior to a repairman examining the pump. For Repair Service Inquiry: WARRANTY This Welch product is warranted to be free from defects in material and workmanship. The liability of Welch Rietschle Thomas under this warranty is limited to servicing, adjusting, repairing, or replacing any unit or component part which in the judgment of Welch Rietschle Thomas has not been misused, abused, or altered in any way or damaged by ingestion of foreign material causing impaired performance or rendering it inoperative. Foreign material includes solids, liquids other than pump oil, corrosive gases, and water or solvent vapor. No other warranties are expressed or implied. The method of executing this warranty: servicing, adjusting, repairing, or replacing, shall be at the discretion of Welch Rietschle Thomas. Vacuum pumps that have been operated within a vacuum system, or other system, for any period, however short, will be repaired under this warranty rather than replaced. The warranty is effective for one year from the date of original purchase when:. The warranty card has been completed and returned.. The product is returned to the factory or other designated Service centers, freight prepaid.. The product in our judgment is defective through no action or fault of the user. If the product has become defective through misuse, abuse, alteration, or ingestion of foreign material, repairs will be billed regardless of the age of the product. In the event, an estimate of the repair costs will be submitted and authorization of these charges will be required before the product is repaired and returned. serviceusa@rtpumps.com Fax: Call: :00 a.m. to 4:0 p.m. Eastern Time TRADEMARKS The following are registered trademarks of Welch Rietschle Thomas: WELCH, DUOSEAL, GEM, CHEMSTAR, DRYFAST, DRYFAST ULTRA. The following are trademarks: SELF-CLEANING DRY VACUUM SYSTEM, UNIBARB & GELMASTER WOB-L is a registered trademark of Rietschle Thomas. For service outside the U.S.A and Canada, contact your closest Rietschle Thomas sales office. See country directory on back cover. The following are registered trademarks of other companies: LABCONCO, CentriVap Labconco Corporation Büchi Büchi Labortechnik AG Teflon E.I. DuPont de Nemours & Co. SpeedVac Thermo Electron Corporation Chemraz Greene, Tweed & Co.

44 Sales and Service Offices For Welch Rietschle Thomas USA, Canada, Latin America Welch Rietschle Thomas P.O. Box 8 Skokie, IL USA Phone: Fax (Technical): Fax (Orders): welchvacuum@thomasind.com Germany Rietschle Thomas Puchheim GmbH Siemensstraße 4 Gewerbegebiet Nord 878 Puchheim Germany Phone: Fax: mgraham@rtpumps.com Switzerland/Liechtenstein Rietschle Thomas Switzerland Frauenfelder Str. 49 CH-870 Siranch TG Switzerland Phone: Fax: info@rtpumps.ch Australia Rietschle Thomas Australia, Pty. Ltd. 0 Bearing Road, Seven Hills New South Wales Australia 47 Phone: 6 () Fax: 6 () tiap@rtpumps.com New Zealand Rietschle Thomas New Zealand P.O. Box Anvil Road, Silverdale Auckland, New Zealand 0 Tel: Fax: tiap@rtpumps.com United Kingdom Rietschle Thomas UK Unit, Alton Business Centre Omega Park, Alton Hants Hampshire GU4 YU United Kingdom Phone: fax: ukinfo@rtpumps.com Denmark Rietschle Thomas Denmark, A/S TåstruphØj P O BOX Holbæk, Denmark Phone: Fax: rtpumpsdk@rtpumps.com France Rietschle Thomas France, S.A.S. Zone Industrielle Liesbach 8, rue des Champs 680 Hesingue, France Phone: Fax: service.commercial@rietschle.fr Italy Rietschle Thomas Italia, S.p.A Via Brodolini, 7 00 Cormano (Milano), Italy Phone: Fax: info.it@rtpumps.com Netherlands Rietschle Thomas Netherlands B.V. Bloemendalerweg 5 8 KC WEESP, Netherlands Phone: Fax: verkoop@rtpumps.com Sweden Rietschle Thomas Sweden AB Götlundagatan SE-47 Bandhagen, Sweden Phone: Fax: infosweden@rtpumps.com Mexico Rietschle Thomas Mexico la Privada Jesus Maria #0 San Jose del Arenal 00 Aguascalientes, Mexico Phone: Fax: adiaz@rtpumps.com Japan Rietschle Thomas Japan 794 Nippa-cho Kohoku-ku Yokohama-shi, Kanagawa Japan Phone: Fax: tiap@rtpumps.com Hong Kong/PRC Rietschle Thomas Hong Kong Units -5, 5th Floor, Metropole Square No. On Yiu St., Siu Lek Yuen Shatin, New Territories, Hong Kong, P.R.C. Phone: Fax: tiap@rtpumps.com Taiwan Rietschle Thomas Taiwan F, No. 9, Rong, Lane 7 Chung Shan Road, Section Chung Ho City, Taiwan Tel: Fax: tiap@rtpumps.com Korea Rietschle Thomas Korea Room 50, Joong Ang Induspia Building 57-, Sang Dae Won Dong, Joong Won Ku Sung Nam City, Kyung Ki Do Korea 46-7 Tel: Fax: tiap@rtpumps.com Brazil Rietschle Thomas Brasilien Comérico Ltda. Rua Shigeru Hayashi, 49 CIC CURITIBA - PR Brazil Tel: Fax: mschmidt@rtpumps.com ISO900: 000 Registered Company /004 Cat. No. MB-90