TEST REPORT: CHM14-07-CHY

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A TEST REPORT: 7191100863-CHM14-07-CHY Date: Tel: +65 68851291 Fax: +65 67784301 Client s Ref: Email: huayi.chen@tuv-sud-psb.

In addition, this report is governed by the terms set out within this report. SUBJECT Test of Naturion Ioniser NA50 for Its Performance of Clean Air Delivery Rate (PM2.

specifications of Naturion Ioniser NA50 were listed in Annex A.

1 A TEST REPORT: CHM14-07-CHY Date: Tel: Fax: Client s Ref: huayi.chen@tuv-sud-psb.sg Note: This report is issued subject to the Testing and Certification Regulations of the TÜV SÜD Group and the General Terms and Conditions of Business of TÜV SÜD PSB Pte Ltd. In addition, this report is governed by the terms set out within this report. SUBJECT Test of Naturion Ioniser NA50 for Its Performance of Clean Air Delivery Rate (PM2.5, PM10) CLIENT Serumi International Private Limited 36 Armenian Street #02-02 Singapore Attn: Mr Sean Gan PY TEST DATE 23 March 2015 DESCRIPTION OF VACCUM CLEANER The photograph and specifications of Naturion Ioniser NA50 were listed in Annex A. METHOD OF TEST The Naturion Ioniser NA50 was tested in a chamber of 200 L (Annex B); Initial particular matter concentrations were adjusted to around 400 µg/m 3 to 450 µg/m 3 for PM2.5 and PM 10; Fan was powered on during ioniser operation; The PM2.5 and PM10 concentrations were monitored under conditions with and without Naturion Ioniser NA50 operation. AHAM AC Method for Measuring Performance of Portable Household Electric Room Air Cleaners was used as a reference (Annex C). Laboratory: TÜV SÜD PSB Pte. Ltd. No.1 Science Park Drive Singapore Phone : Fax : testing@tuv-sud-psb.sg Co. Reg : R Regional Head Office: TÜV SÜD Asia Pacific Pte. Ltd. 3 Science Park Drive, #04-01/05 The Franklin, Singapore

2 RESULTS 1. PM 2.5 Removal Performance The results of PM2.5 removal performance were listed in Table 1 and plotted in Figure 1. Table 1 PM2.5 removal performance of Naturion Ioniser NA50 (unit: µg/m 3 ) Time, Minutes PM 2.5- without Naturion Ioniser NA50 Operation (Natural Decay) PM2.5- with Naturion Ioniser NA50 Operation Figure 1 Schematic diagram of PM2.5 removal performance by Naturion Ioniser NA50 Page 2 of 10

3 RESULTS (Continued) 2. PM 10 Removal Performance The results of PM10 removal performance were listed in Table 2 and plotted in Figure 2. Table 2 PM10 removal performance of Naturion Ioniser NA50 (unit: µg/m 3 ) Time, Minutes PM10- without Naturion Ioniser NA50 Operation (Natural Decay) PM10- with Naturion Ioniser NA50 Operation Figure 2 Schematic diagram of PM10 removal performance by Naturion Ioniser NA50 Page 3 of 10

4 RESULTS (Continued) 3. Calculation of Clean Air Delivery Rate (CADR) By referring to AHAM AC Method for Measuring Performance of Portable Household Electric Room Air Cleaners, the Clean Air Delivery Rate (CADR) in terms of PM2.5 and PM10 removal was calculated by: CADR = V chamber (K ioniser K natural decay ) (Annex C) Where V chamber = 200 litres K ioniser = linear regression of Ln (PM2.5/PM10- Naturion Ioniser NA50 Operation) Vs Time K natural decay = linear regression of Ln (PM2.5/PM10- Natural decay) Vs Time The CADR calculation result were listed in Table 3 and Table 4 Table 3 CADR of Naturion Ioniser NA50 in terms of PM 2.5 removal Values V chamber, litres 200 K ioniser, 1/minute (R 2 = 0.97) K natural decay, 1/minute (R 2 = 0.99) CADR (in terms of PM 2.5 removal), litres/minute CADR (in terms of PM 2.5 removal), litres/hour 2,470 Table 4 CADR of Naturion Ioniser NA50 in terms of PM 10 removal Values V chamber, litres 200 K ioniser, 1/minute (R 2 = 1.00) K natural decay, 1/minute (R 2 = 0.99) CADR (in terms of PM10 removal), litres/minute CADR (in terms of PM10 removal), litres/hour 3,611 Page 4 of 10

DISCUSSION The PM2.5 concentrations decreased from 418 µg/m 3 to 7 µg/m 3 in a 200 litre chamber after 15 minutes operation of Naturion Ioniser NA50 or decreased by 98.3%.

The Clean Air Delivery Rate (CADR) of Naturion Ioniser NA50 in terms of PM2.5 removal was calculated to be 41.20 litres/minute or 2,470 litres/hour.

5 DISCUSSION The PM2.5 concentrations decreased from 418 µg/m 3 to 7 µg/m 3 in a 200 litre chamber after 15 minutes operation of Naturion Ioniser NA50 or decreased by 98.3%. The PM10 concentrations decreased from 445 µg/m 3 to 2 µg/m 3 in a 200 litre chamber after 15 minutes operation of Naturion Ioniser NA50 or decreased by 99.6%. The Clean Air Delivery Rate (CADR) of Naturion Ioniser NA50 in terms of PM2.5 removal was calculated to be litres/minute or 2,470 litres/hour. The Clean Air Delivery Rate (CADR) of Naturion Ioniser NA50 in terms of PM10 removal was calculated to be litres/minute or 3,611 litres/hour. DR. YANG LEI EXECUTIVE CONSULTANT DR CHEN HUAYI ASSISTANT VICE PRESIDENT CHEMICAL CENTRE Page 5 of 10

Annex A: Naturion Ioniser NA50 Specifications (Provided by Serumi International Private Limited) Name Naturion Ioniser NA50 Photograph Negative ions count Power supply Net

6 Annex A: Naturion Ioniser NA50 Specifications (Provided by Serumi International Private Limited) Name Naturion Ioniser NA50 Photograph Negative ions count Power supply Net Weight Unit dimensions Unit with clip dimensions Packaging dimensions Max pcs/cm 3 (at 100 cm distance) DC 12V 43 g mm mm mm Page 6 of 10

7 Annex B: Schematic of test chamber Particulate analyzer NA50 Wind direction Figure 3 Schematic layout of the test chamber (200 litres) Page 7 of 10

8 Annex C: CADR Calculation method (by referring to AHAM AC Section 8: Method for measuring performance of portable household electric room air cleaners) Page 8 of 10

9 Page 9 of 10

10 Please note that this Report is issued under the following terms : 1. This report applies to the sample of the specific product/equipment given at the time of its testing/calibration. The results are not used to indicate or imply that they are applicable to other similar items. In addition, such results must not be used to indicate or imply that TÜV SÜD PSB approves, recommends or endorses the manufacturer, supplier or user of such product/equipment, or that TÜV SÜD PSB in any way guarantees the later performance of the product/equipment. Unless otherwise stated in this report, no tests were conducted to determine long term effects of using the specific product/equipment. 2. The sample/s mentioned in this report is/are submitted/supplied/manufactured by the Client. TÜV SÜD PSB therefore assumes no responsibility for the accuracy of information on the brand name, model number, origin of manufacture, consignment or any information supplied. 3. Nothing in this report shall be interpreted to mean that TÜV SÜD PSB has verified or ascertained any endorsement or marks from any other testing authority or bodies that may be found on that sample. 4. This report shall not be reproduced wholly or in parts and no reference shall be made by the Client to TÜV SÜD PSB or to the report or results furnished by TÜV SÜD PSB in any advertisements or sales promotion. 5. Unless otherwise stated, the tests were carried out in TÜV SÜD PSB Pte Ltd, No.1 Science Park Drive Singapore July 2011 Page 10 of 10

TEST REPORT: CHM14-05-CHY

TEST REPORT: CHM14-05-CHY A TEST REPORT: 7191100863-CHM14-05-CHY Date: Tel: +65 68851291 Fax: +65 67784301 Client s Ref: Email: huayi.chen@tuv-sud-psb.sg Note: This report is issued subject to the Testing and Certification Regulations