UNDERWRITERS 7 LABORATORIES OF CANADA

INCORPORATED 1920 UNDERWRITERS 7 LABORATORIES OF CANADA In Replying Please Refer to File CEx1348 Application No. December 17, 1999 REPORT on WETTING AGENT Pyrocool Technologies Inc. Lynchburg, Virginia Page 1 of 9 General Offices and Testing Station 7 GROUSE ROAD, SCARBOROUGH, ONTARIO, CANADA M1R 3A9 Telephone (416) 757-3611 Fax: Accounting (416) 757-8915 Engineering (416) 757-1781 Follow-Up Services (416) 757-3788 Standards: (416) 757-9540 Visit us at: www.ulc.ca e-mail: ulcinfo@ulc.ca

CEx1348 Page 2 of 9 December 17, 1999 DESCRIPTION PRODUCT COVERED: Wetting Agents Pyrocool FEF, 0.4% concentrate solution. GENERAL CHARACTER AND USE: The wetting agent is a chemical compound which, when added to water at a 0.4 percent concentration reduces the solution's surface tension, increases its penetrating and spreading abilities and provides some emulsification and foam characteristics. The wetting agent, when added to water at a 0.4 percent concentration, is effective on Class A and Class B fires at a discharge rate of 8 litres/minute per square metre. It may be used in accordance with the Standard of the National Fire Protection Association for Wetting Agents, NFPANo.18. The wetting agent is suitable for use at or above 2 C. MARKING: Each container of listed wetting agent is eligible to bear a label which reads: together with the listee's name and address. Underwriters' Laboratories of Canada Listed Wetting Agent No. C PACKAGING: The wetting agent is packaged in the following: Plastic containers, 19L or 208L, manufactured by Container Corporation of America. THE INVESTIGATION The object of this investigation was to determine compliance of this product with the current requirements of Underwriters' Laboratories of Canada for this class of product as included under ULC Subject C175.

CEx1348 Page 3 of 9 December 17, 1999 This wetting agent has also been investigated by Underwriters Laboratories Inc., under Project No. 92NK9626, File EX4406. A review of the data obtained from the earlier investigation indicated that a further complete test program involving container and hose compatibility tests, was not necessary in order to establish a listing. The following tests were conducted at Underwriters' Laboratories of Canada on samples of the product. TEST RECORD CHEMICAL IDENTIFICATION: Qualitative Infrared Analysis - An infrared spectrum of each concentrate was obtained using an infrared spectrophotometer. ph Determination - The ph of the 0.4 percent concentration of the solution was determined using an Accument ph meter, Model 915, at a temperature of 16 C. Solubility - Throughout the storage and use temperature range, the wetting agents were observed to determine that a true solution was formed with water, which was stable at the 0.4 percent concentration. Separation Temperature - Aqueous solutions of the wetting agent at 0.4 percent concentration were observed to determine that there was no separation at any temperature between 0-49 C. Separation on Standing - The wetting agents, at the 0.4 percent concentration specified for use by the manufacturer, were tested to determine that there was no tendency to "layer out" or otherwise separate, on standing for 30 days, at temperature of 2 C, 16 C and 49 C. Action After Freezing - Aqueous solutions of the wetting agent in 0.4 percent concentration were frozen for 1 h and then warmed to 16 C. Observations for separation of the wetting agent after warming up were made. Viscosity - The viscosity of the wetting agent and of the 0.4 percent solution were determined at 16 C by use of a Brookfield Viscometer, Model RUT.

CEx1348 Page 4 of 9 December 17, 1999 Surface Tension - The surface tension of the wetting agent concentrates and the 0.4 % solution was determined in accordance with ASTM D1131, Method A. The measurements were taken with a Central Scientific Company 70535 Cenco DuNouy Tensiometer, at 25 C. The following results were obtained: 1. Infrared Spectrum - See Appendix A. 2. ph - 7.82 (0.4%). 3. Solubility - True Solution Formed. 4. Separation Temperature - No separation, 2-49 C. 5. Separation on Standing - Acceptable After 30 days. 6. Action After Freezing - No Separation or Layering. 7. Viscosity-0.4 percent-12.5 cps (average) - concentrate - 105 cps (average) 8. Surface Tension - 25.4 Dynes/cm - 0.4 Percent Solution - 24.4 Dynes/cm FIRE EXTINGUISHMENT: Class A Fire Tests - Crib - Th Class A extinguishing capability was confirmed from the results of fire tests in freely burning wood cribs constructed as follows: The cribs consisted of cube shaped stacks formed from nominal 38 by 38 mm spruce built upon 64 by 64 mm angle iron supported on an angle iron frame on a weighing platform at a height of 390 mm above the floor.

CEx1348 Page 5 of 9 December 17,1999 The wood was placed in layers, with each layer at right angles to the preceding layer and with spaces left between the wood approximately equal to the dimensions of the wood itself. A pan containing N-heptane was placed centrally beneath the crib. The arrangement and dimension of the wood used, the quantity of fuel used for ignition and the rating and classification represented are shown in the following tabulation: Number of Size & Length Arrangement Equivalent Wood Of Each Of Igniting Rating & Members Member (mm) Crib Fuel (L) Classification 112 38x38x635 16 layers of 7 2.0 2-A In each test the total mass of the crib was determined and the igniting fuel added to the pan. The heptane in the pan was then ignited and the crib allowed to burn until its mass had been reduced to 55 percent of its original mass. The crib was then attacked from three sides, top and bottom, using a continuous discharge of a 19 Litre extinguisher with a 0.4 percent wetting agent solution. The fire was then left for 15 minutes and checked for re-ignition. The following results were obtained: Wetting Equivalent Test Agent Pre-Burn Fire Agent Rating and No. Concentration Min:Sec Extinguisher Discharged (kg) Classification 1 0.4 8:08 Yes 8.83 2-A 2 0.4 8.12 Yes 8.73 2-A Class A Fire Test - Cotton A cylindrical basket of perforated sheet steel, 115 mm in diameter and 180 mm high, was filled with ginned cotton weighing 100 g. One-half of the sample of cotton was stuffed into the basket and a steel rod, 35 mm in diameter and 33 mm long, heated to 600 C, was then placed on the cotton basket. The other half of the cotton was then placed stuffed into the basket. 250 cc of either water or the 0.4 percent solution of the extinguishing liquid was poured onto the cotton and the runoff caught in a pan placed below the basket. Three tests with plain water and three tests with the wetting agent solution were conducted.

CEx1348 Page 6 of 9 December 17, 1999 Test No. Agent Type Fire Extinguished Run Off Collected No No No Yes Yes Yes Class A Fire Test - Insulating Board Insulating board squares, measuring 300 by 300 by 12.5 mm, were placed on a grid of wire. Each insulating board sample was exposed to an alcohol flame from a burning pan which was placed immediately below the sample board. The flame was exposed to the board for 1-3/4 minutes. After this time, the pan was removed. 250 cc of either water or the 0.4 percent agent solution was then sprayed on the upper surface of the insulating board using a small spray bottle. Pans were placed underneath the board to catch any runoff which occurred. The total amount of the insulation board consumed was determined by the weight loss. Three tests with plain water and three tests with the wetting agent solution were conducted. Insulating Board Run Off Test No. Agent Type Weight Loss, g Collected, ml 13 38 28 131 137 147 8 0 0 CLASS B FIRE TEST: The Class B extinguishing potential was confirmed from the results of tests in freely burning open pans of flammable liquid.

CEx1348 Page 7 of 9 December 17, 1999 The pans were 300 mm deep, providing burning areas as shown in the following table. The pans contained 100 mm of water and 50 mm of N-heptane. The fuel was ignited and after a preburn period of 60 sec each fire was attacked with an extinguishing agent solution of 0.4 percent applied at a rate of 38 Litre/minute with a nozzle pressure of 300 kpa at a height of 1 metre above the pan edge and striking a backboard at the back of the pan. The following results were obtained: Extinction Equivalent Test Agent Area Fire Time Ratings & No. Concentration Of Fire (sq m) Extinguished (min:sec) Classification 1 0.4 percent 4.65 Yes 10:30 20-B 2 0.4 percent 4.65 Yes 8:44 20-B

CEx1348 Page 8 of 9 December 17, 1999 \ CONCLUSIONS CONFORMITY: On the basis of the foregoing, the design, construction and performance of the product covered by this Report are judged to be in compliance with the current requirements of Underwriters' Laboratories of Canada as included under ULC-Subj. C175. The wetting agent may be used in accordance with the requirements of the Standard of the National Fire Protection Association for Wetting Agents, NFPA 18.

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