REPORT issued by an Accredited Testing Laboratory

issued by an Accredited Testing Laboratory Contact person RISE Tobias Eriksson 2017-03-02 6P07577-25-rev1 1 (3) Energy and circular economy +46 10 516 57 07 tobias.eriksson@ri.se Camfil AB Industrigatan 3 619 33 TROSA Testing Testing of Air Filter according to ISO 16890:2016 (6 appendices) Rev 1 1) The energy calculation according to Eurovent 4/21 has been removed from the report. 2) Testing organisation has been changed from SP to RISE. This report replace 6P07577-25 dated 2017-03-02. A test according to ISO 16890:2016 was carried out by request from Camfil AB. Tested item Camfil AB, Hi Flo II, XLT 7/640 50+ (HFGX-F7-592/592/640-10-25), a 592 mm x 592 mm x 640 mm, 10 Pocket bag filter. Article number: 610165. Pictures can be found in appendix 5. The item was sent to SP by Camfil AB and was received by SP on February 14, 2017. The item was without visible defects. Test method The test was carried out according to standard ISO 16890:2016 Air filters for general ventilation. The standard consists of four parts: - ISO 16890-1: Technical specifications, requirements and classification system based upon particulate matter efficiency (epm) - ISO 16890-2: Measurement of fractional efficiency and air flow resistance Measurements were performed with dual particle counters according to section 9.3.4 - Testing sequence for dual OPC testing. - ISO 16890-3: Determination of the gravimetric efficiency and the airflow resistance versus the mass of test dust captured Postal address Office location Phone / Fax / E-mail This report may not be reproduced other than in full, except Box 857 SE-501 15 BORÅS Sweden Brinellgatan 4 SE-504 62 BORÅS +46 10 516 50 00 +46 33 13 55 02 info@ri.se with the prior written approval of the issuing laboratory. Accred. No. 2 Testing ISO/IEC 17025

2017-03-02 6P07577-25-rev1 2 (3) - ISO 16890-4: Conditioning method to determine the minimum fractional test efficiency Eight cabinets with a total surface area of 1.82 m 2 were placed in the chamber according to ISO 16890-4 section 7. The purity of the 2-propanol was 99.5 %. The test item was conditioned for 24.5 +/- 0.5 hours. Efficiency at 50% nominal air flow was measured with DEHS in the range 0.3 1 µm. Deviation from the standard: Section 9.2.2 and 9.2.8, the evaporated amount of 2-propanol was not determined. Section 7.3, the atmospheric pressure during the conditioning procedure was not measured. Date and Place The test was carried out at SP s laboratory of Energy and circular economy in Borås, Sweden on February 16-23, 2017. Tests according to ISO 16890-2 were carried out on February, 16, 2017. Tests according to ISO 16890-3 were carried out on February, 23, 2017. Tests according to ISO 16890-4 were carried out on February, 23, 2017, conditioning procedure according to ISO 16890-4 was carried out on February, 20-21, 2017. Results The results are presented in appendix 1-4 and are valid only for the item tested. In appendix 1 a summary of the results are reported according ISO 16890-1. It also includes the fractional efficiencies and the calculation of PM-efficiencies. In appendix 2 fractional efficiency and air flow resistance are reported according to ISO 16890-2. In appendix 3 determination of the gravimetric efficiency (arrestance) and the air flow resistance versus the mass of test dust capture (test dust capacity) are reported according to ISO 16890-3. In appendix 4 the minimum fractional efficiency is reported according to ISO 16890-4. The measured particle concentrations are reported in appendix 2 and appendix 4. Table A6 (upstream count data), A7 (downstream count data) and A9 Uncertainty in ISO 16890-2 Annex A are reported.

2017-03-02 6P07577-25-rev1 3 (3) Measurement equipment Pressure gauge Furness model 318, SP's inventory no. 901 568 (static P Filter) Pressure gauge Furness model 318, SP's inventory no. 901 569 (static P Flow) Pressure gauge Furness FC012, SP's inventory no. 201 691 ( P Filter) Pressure gauge Furness FC012, SP's inventory no. 201 690 ( P Flow) Particle counter TSI, OPS 3330, SP's inventory no. 902240 Particle counter TSI, OPS 3330, SP's inventory no. 902241 Barometer, Testo 511, SP's inventory no. 900 078 Temperature and RH, Testo 635, SP's inventory no. 900 065 Weighing scale, Mettler PC16, SP's inventory no. 202 741 Flow meter, MFS-C-250, SP's inventory no. 202 742 Temperature and RH, Tinytag, DIV 94 S Barometer, Druck PACE 1, SP's inventory no. 902243 Uncertainty of measurement The uncertainty of the Air flow is better than ± 5 % The uncertainty of the Pressure Drop is better than ± 3 % The uncertainty of the Temperature is better than ± 0.5 ºC The uncertainty of the Relative Humidity is better than ± 2 % RH The uncertainty of the Atmospheric Pressure is better than ± 1 mbar The uncertainty of the Measured mass is better than ± 0.5 g The uncertainty has been calculated according to EA-4/16 with a coverage factor k=2. The uncertainty of the filtration efficiency according to ISO 16890:2016 is presented in appendices 2 and 4. Energy and circular economy - Building Services Engineering Performed by Examined by Signature_1 Tobias Eriksson Signature_2 Christian Mossberg Appendices 1. Summary test report according to ISO 16890-1:2016 2. Test report according to ISO 16890-2:2016 3. Test report according to ISO 16890-3:2016 4. Test report according to ISO 16890-4:2016 5. Additional pictures of the test item. 6. The interpretation of test reports

Pressure differential, 1.2 kg/m 3 (Pa) Arrestance (% ) Fractional efficiency (% ) REPORT 2017-03-02 6P07577-25-rev1 1 (3) Appendix 1 ISO 16890-1:2016 - Air Filter Test Results Testing Organization: RISE Research Institute of Sweden Brinellgatan 4, 501 15 Borås, Swedan +460105165000 GENERAL Report no.: 6P07577-25-rev1 Date of tests: 2017-02-16-2017-02-23 Date of report: 2017-03-02 Supervisor: CM Device obtained (when and how obtained): Test(s) requested by: Camfil AB The device was sent and obtained on 2017-02-14 DEVICE TESTED Model: Hi Flo II Manufacturer: Construction: XLT 7/640 50+ (HFGX-F7-592/592/640-10-25) Camfil AB Pocket filter, 10 Pockets Article number: Type of medium: Net effective filtering area: Filter dimensions (width x height x depth) 610165 Glass 7.3 m 2 592x592x640 mm TEST DATA AND ATTACHED TEST REPORTS Test air flow rate: Test aersole: Test report to ISO 16890-2 Report no. 6P07577-25-rev1 Appendix 2 0.944 m 3 /s KCl (1-10 µm) Test report to ISO 16890-3 (optional) Report no. 6P07577-25-rev1 Appendix 3 DEHS (0.3-1 µm) Test report to ISO 16890-4 Report no. 6P07577-25-rev1 Appendix 4 RESULTS Initial pressure differential: Initial grav. arrestance: epm 1, min epm 2.5, min ISO rating 72 Pa 97 % 63 % 73 % Final test pressure differential: Test dust capacity: epm 1 epm 2.5 epm 10 ISO epm 1 60 % 300 Pa 1160 g 64 % 73 % 91 % Remarks:.0 90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0 0.0 0.1 1.0 10.0 Particle size (µm) Initial fractional efficiency Ei (ISO 16890-2) Conditioned fractional efficiency ED,i (ISO 16890-4) Average fractional efficiency EA, i (ISO 16890-1) 400 360 320 280 240 200 160 120 80 40 0 Test dust capture (g) 0 200 400 600 800 0 1200 1400 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 Air flow rate (m 3 /s) 90 80 70 60 50 40 30 20 10 0 Pressure differential as a function of the air flow rate (clean filter) (ISO 16890-2) Pressure differential as a function of the test dust captured (ISO 16890-3) Grav. arrestance as a function of the test dust captured (ISO 16890-3) NOTE: The results of this test relate only to the test device in the condition stated herein. The performance results cannot by themselves be quantitatively applied to predict filtration performance in all "real life" environments.

2017-03-02 6P07577-25-rev1 2 (3) Appendix 1 ISO 16890-1:2016 - Fractional efficiency values Testing organisation: RISE Research Institute of Sweden Report no: 6P07577-25-rev1 Model: Hi Flo II XLT 7/640 50+ (HFGX-F7-592/592/640-10-25) Manufacturer: Camfil AB Test air flow rate: 0.944 m 3 /s Date of report: 2017-03-02 i d i d i+1 d a, i Δln d i E i E D, i E A, i µm µm µm µm % % % 1 0.30 0.40 0.35 0.29 52.8 50.8 51.8 2 0.40 0.55 0.47 0.32 61.6 60.1 60.9 3 0.55 0.70 0.62 0.24 71.6 69.6 70.6 4 0.70 1.00 0.84 0.36 80.6 79.5 80.1 5 1.00 1.30 1.14 0.26 90.0 90.0 90.0 6 1.30 1.60 1.44 0.21 92.3 91.7 92.0 7 1.60 2.20 1.88 0.32 95.3 94.9 95.1 8 2.20 3.00 2.57 0.31 98.6 98.4 98.5 9 3.00 4.00 3.46 0.29 99.7 99.7 99.7 10 4.00 5.50 4.69 0.32 99.8 99.9 99.8 11 5.50 7.00 6.20 0.24 99.9 99.9 99.9 12 7.00 10.00 8.37 0.36 99.9.0 99.9 d i : Lower limit particle diameter in a size range i, µm d i+1 : Upper limit particle diameter in a size range i, µm d a, i : Geometric mean diamter of a size range i, µm Δln d i : Logarithmic width of a particle diameter size in range i; ln is the natural logaritm to the base of e, where e is an irrational and transcendetal constant approximately equal to 2.718281828, dimensionless ln d i = ln (d i+1 /d i ) E i : Initial fractional efficiency of partcile size range i of the untreated and unloaded filter element, % E D, i : Fractional efficiency of particle size range i of the filter element after an artifical conditioning step, % E A, i : Average fractional efficeincy (E i + E D, i )/2 of particle size range i, %

2017-03-02 6P07577-25-rev1 3 (3) Appendix 1 ISO 16890-1:2016 - Calculation of PM-efficiencies Testing organisation: Model: RISE Research Institute of Sweden Hi Flo II XLT 7/640 50+ (HFGX-F7-592/592/640-10-25) Report no.: Manufacturer: 6P07577-25-rev1 Camfil AB Test air flow rate: 0.944 m 3 /s Date of report: 2017-03-02 i urban E Δln d i q 3u (d a, i ) D, i E A, i d a, i epm x, min epm x distribution q ln d 3u (d a, i ) q 3u (d a, i ) µm µm q 3u (d a, i ) i ln d i ln d i % % 1 0.35 0.29 0.226 0.065 3.304 3.37 2 0.47 0.32 0.199 0.063 3.806 3.85 3 0.62 0.24 0.158 0.038 2.660 2.70 4 0.84 0.36 0.115 0.041 3.268 3.29 epm 1, min epm 1 line 1-4 0.208 13.038 13.215 63 64 5 1.14 0.26 0.085 0.022 2.008 2.008 6 1.44 0.21 0.076 0.016 1.450 1.455 7 1.88 0.32 0.080 0.026 2.424 2.429 8 2.57 0.31 0. 0.031 3.046 3.049 epm 2.5, min epm 2.5 line 1-8 0.302 21.966 22.156 73 73 i rural E d a, i Δln d i q 3u (d a, i ) A, i epm x distribution q ln d 3u (d a, i ) µm µm q 3u (d a, i ) i ln d i % 1 0.35 0.29 0.094 0.027 1.402 2 0.47 0.32 0.084 0.027 1.627 3 0.62 0.24 0.074 0.018 1.266 4 0.84 0.36 0.070 0.025 2.003 5 1.14 0.26 0.076 0.020 1.802 6 1.44 0.21 0.088 0.018 1.687 7 1.88 0.32 0.108 0.034 3.272 8 2.57 0.31 0.137 0.043 4.192 9 3.46 0.29 0.167 0.048 4.791 10 4.69 0.32 0.195 0.062 6.213 11 6.20 0.24 0.217 0.052 5.221 12 8.37 0.36 0.231 0.083 8.248 epm 10 line 1-12 0.457 41.723 91

2017-03-02 6P07577-25-rev1 1 (3) Appendix 2 ISO 16890-2:2016 - AIR FILTER TEST RESULTS SUMMARY +460105165000 GENERAL Test ID: SP201702161 Date of test: 2017-02-16 Operator: CM Particle counter information Air flow measurement: Device obtained (when and how Manufacturer: Model: Coincidence value Annubar, Micatrone obtained): TSI Gmbh OPS 3330 (p/cm 3 ): Air flow sensor MFS-SS The device was sent and obtained on 300 2017-02-14 DEVICE TESTED Model: Hi Flo II Manufacturer: Construction: XLT 7/640 50+ (HFGX-F7-592/592/640-10-25) Camfil AB Pocket filter, 10 Pockets Article number: 610165 Type of media: Glass Filter/media electrostatic charge: No Device Condition: Clean / Initial Net effective media area (m 2 ) 7.3 m 2 Media colour: green Testing Organization: RISE Research Institute of Sweden Brinellgatan 4, 501 15 Borås, Swedan Filter dimensions (width x height x depth) 592x592x640 mm Media adhesive: N/A Other descriptive information: TEST DATA SUMMARY Test air flow rate: 0.944 m 3 /s RESULTS Measured: Remarks: Test air temperature: 21-21.4 C Resistance to airflow (Pa) Rated initial: - 72 Pa Rated Final: - Test Device Photo Test air RH: 40.1-45.9 % Test aersol: DEHS (0.3-1 µm) KCl (1-10 mm) Fractional Efficiency (%) Range (µm) Measured Rated Upstream concentration Efficiency Efficiency (particles / dm 3 ) 0.30-0.40 0.40-0.55 0.55-0.70 0.70-1.00 1.00-1.30 1.30-1.60 1.60-2.20 53 62 72 81 90 92 95 19716 16846 11089 10117 5320 2980 12454 2.20-3.00 99 8172 3.00-4.00 3753 4.00-5.50 2142 5.50-7.00 692 7.00-10.00 694 NOTE: The results of this test relate only to the test device in the condition stated herein. The performance results cannot by themselves be quantitatively applied to predict filtration performance in all "real life" environments.

Fractional efficiency (%) Pressure differential, 1.2 kg/m 3 (Pa) REPORT 2017-03-02 6P07577-25-rev1 2 (3) Appendix 2 ISO 16890-2:2016 - AIR FILTER TEST RESULTS DETAILS Testing Organization: RISE Research Institute of Sweden Brinellgatan 4, 501 15 Borås, Swedan +460105165000 Test ID: SP201702161 Date of test: 2017-02-16 Operator: CM TEST DATA DETAILS Resistance to Airflow 1.2 kg/m 3 % of rated airflow Airflow Resistance to (m 3 /s) Airflow (Pa) 120 40% 0.379 23 50% 0.473 30 75% 0.708 49 80 % 0.944 72 125% 1.180 98 60 40 20 0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 Airflow (m 3 /s) Fractional Efficiency by Particle Size.0 90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0 0.0 0.10 1.00 10.00 Particle size (µm) NOTE: The results of this test relate only to the test device in the condition stated herein. The performance results cannot by themselves be quantitatively applied to predict filtration performance in all "real life" environments.

2017-03-02 6P07577-25-rev1 3 (3) Appendix 2 Efficiency measurement Upstream count data OPC bin d a, i Upstream efficiency count data µm 1 2 3 4 5 U e,tot 1 0.35 19386 20004 19586 19590 20015 98581 2 0.47 16770 17157 16558 16865 16879 84229 3 0.62 10912 11281 10955 17 11288 55443 4 0.84 9918 10341 9963 10134 10228 50584 5 1.14 5205 5351 5375 5381 5290 26602 6 1.44 2903 2998 2977 2930 3091 14899 7 1.88 12215 12426 12494 12566 12570 62271 8 2.57 7969 8204 8162 8295 8232 40862 9 3.46 3683 3779 3850 3677 3778 18767 10 4.69 2115 2159 2108 2105 2224 10711 11 6.20 710 758 689 612 693 3462 12 8.37 668 715 669 708 708 3468 Note: All data shown is the number of particle counts for 60 s Efficiency measurement Downstream count data OPC bin d a, i Downstream efficiency count data µm 1 2 3 4 5 D e,tot 1 0.35 8520 8960 8739 8775 8815 43809 2 0.47 6363 6618 6317 6370 6558 32226 3 0.62 3166 3252 3266 3136 3229 16049 4 0.84 1909 1974 1880 1854 1932 9549 5 1.14 521 506 542 569 543 2681 6 1.44 219 202 216 203 235 1075 7 1.88 496 573 566 522 518 2675 8 2.57 115 112 110 104 97 538 9 3.46 9 11 15 13 8 56 10 4.69 2 3 3 6 6 20 11 6.20 0 0 0 1 1 2 12 8.37 1 0 1 2 1 5 Note: All data shown is the number of particle counts for 60 s Efficiency measurement Final results and uncertainty OPC bin d a, i Penetration data reduction Uncertainty limits Uncertainty Efficiency µm P a δ e Static Dynamic Pass/Fail % 1 0.35 0.472 0.007 0.008 0.05 0.033 Pass 52.8 2 0.47 0.384 0.005 0.007 0.05 0.027 Pass 61.6 3 0.62 0.284 0.008 0.009 0.05 0.020 Pass 71.6 4 0.84 0.194 0.004 0.005 0.05 0.014 Pass 80.6 5 1.14 0. 0.004 0.005 0.05 0.007 Pass 90.0 6 1.44 0.077 0.005 0.006 0.05 0.005 Pass 92.3 7 1.88 0.047 0.003 0.004 0.05 0.003 Pass 95.3 8 2.57 0.014 0.001 0.001 0.05 0.001 Pass 98.6 9 3.46 0.003 0.001 0.001 0.05 0.000 Pass 99.7 10 4.69 0.002 0.001 0.001 0.05 0.000 Pass 99.8 11 6.20 0.001 0.001 0.001 0.05 0.000 Pass 99.9 12 8.37 0.001 0.001 0.001 0.05 0.000 Pass 99.9 d a, i : Geometric mean diameter of a size range i, µm P a δ e the final penetration for a given particle size the standard deviation of the penetration for a given particle size the uncertainty of the penetration for a given particle size

2017-03-02 6P07577-25-rev1 1 (4) Appendix 3 ISO 16890-3:2016 - AIR FILTER TEST RESULTS SUMMARY +460105165000 GENERAL Test ID: SP201702161 Date of test: 2017-02-23 Operator: CM DEVICE TESTED Model: Hi Flo II XLT 7/640 50+ (HFGX-F7-592/592/640-10-25) Camfil AB Article number: Type of media: 610165 Glass Manufacturer: Air flow measurement: Annubar, Micatrone Air flow sensor MFS-SS Net effective media area (m 2 ) 7.3 m 2 Filter/media electrostatic charge: Media colour: No green Device Condition: Conditioned per ISO 16890-4 Testing Organization RISE Research Institute of Sweden Brinellgatan 4, 501 15 Borås, Swedan Test sample obtained: The device was sent and obtained on 2017-02-14 Construction: Pocket filter, 10 Pockets Filter dimension (W x H x D) (mm) 592x592x640 mm Media adhesive: N/A Other descriptive information: TEST DATA SUMMARY Test air flow rate: Test air temperature: Test air RH: Loading dust: 0.944 m 3 /s 20.8-21.7 C 40.2-44.5 % Particle Technology, ISO 121031 A2-fine RESULTS Resistance to airflow Dust loading results Measured: 72 Pa Final test pressure: 300 Pa Rated initial: Rated Final: - Pa Test Device Photo Initial arrestance (%) Average arrestance(%) Test dust capacity (g) - Pa 97 % >99 % 1160 g Remarks: NOTE: The results of this test relate only to the test device in the condition stated herein. The performance results cannot by themselves be quantitatively applied to predict filtration performance in all "real life" environments.

Arrestance (% ) Resistance to Airflow, 1.2 kg/m 3 (Pa) REPORT 2017-03-02 6P07577-25-rev1 2 (4) Appendix 3 ISO 16890-3:2016 - AIR FILTER TEST RESULTS DETAILS Testing Organization: +460105165000 Test ID: SP201702161 Date of test: 2017-02-23 Operator: CM TEST DATA DETAILS Resistance to Airflow 1.2 kg/m 3 % of rated Airflow Resistance to airflow (m 3 /s) Airflow (Pa) 120 40% 0.378 23 50% 0.474 30 75% 0.708 49 80 % 0.944 72 125% 1.181 99 60 Resistance to Airflow, 1.2 kg/m 3 (Pa) 40 20 RISE Research Institute of Sweden Brinellgatan 4, 501 15 Borås, Swedan 0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 Airflow (m 3 /s) 350 300 250 200 150 50 0 0 200 400 600 800 0 1200 1400 Dust fed (g) 90 80 70 60 50 40 30 20 10 0 0 200 400 600 800 0 1200 1400 Dust fed (g) NOTE: The results of this test relate only to the test device in the condition stated herein. The performance results cannot by themselves be quantitatively applied to predict filtration performance in all "real life" environments.

2017-03-02 6P07577-25-rev1 3 (4) Appendix 3 ISO 16890-3:2016 - Air flow rate and resistance to air flow after different dust loading phases Test device: Test no.: Test dust: Hi Flo II XLT 7/640 50+ (HFGX-F7-592/592/640-10-25) SP201702161 Particle Technology, ISO 121031 A2-fine, Batch nr: 9173 Air flow rate: 0.944 m 3 /s Date Loaded Air flow meter dust Filter m tot t f p sf p f q m t ϕ p a ρ q v p p 1.20 g C Pa Pa kg/s C % kpa kg/m 3 m 3 /s Pa Pa Clean filter 2017-02-23-21.1 16 491 0.43 21.1 44.2 96.8 1.141 0.378 23 23 2017-02-23-21.5 23 489 0.54 21.5 45.0 96.8 1.140 0.474 30 30 2017-02-23-21.3 42 489 0.81 21.3 42.7 96.8 1.141 0.708 49 49 2017-02-23-20.9 69 489 1.08 20.9 42.2 96.8 1.143 0.944 72 72 2017-02-23-20.7 53 490 1.35 20.7 43.3 96.8 1.143 1.181 98 99 Clean filter pressure drop is proportional to (q v ) n, where n = 1.28 Dust loading phase 2017-02-23 0 20.9 69 491 1.078 20.9 42.2 96.8 1.143 0.944 72 72 2017-02-23 30 21.6 61 489 1.074 21.6 43.9 96.7 1.138 0.944 75 75 2017-02-23 70 21.7 64 489 1.074 21.7 43.5 96.7 1.138 0.944 78 79 2017-02-23 110 21.7 65 489 1.074 21.7 44.5 96.7 1.137 0.944 81 82 2017-02-23 150 21.1 66 490 1.076 21.1 42.2 96.7 1.140 0.944 84 84 2017-02-23 190 20.8 67 490 1.076 20.8 42.0 96.6 1.141 0.944 87 88 2017-02-23 230 21.0 73 490 1.076 21.0 41.4 96.6 1.140 0.944 90 91 2017-02-23 270 21.2 77 489 1.074 21.2 43.6 96.6 1.139 0.944 93 94 2017-02-23 310 21.1 82 490 1.076 21.1 40.2 96.6 1.140 0.944 96 97 2017-02-23 510 21.1 87 489 1.074 21.1 43.2 96.6 1.139 0.944 114 115 2017-02-23 810 20.9 120 490 1.076 20.9 41.8 96.6 1.139 0.944 162 163 2017-02-23 1010 20.9 161 490 1.076 20.9 41.0 96.6 1.140 0.944 222 225 2017-02-23 1210 20.9 221 490 1.076 20.9 40.2 96.6 1.140 0.944 319 323 Symbols and units p f air flow meter differential pressure, Pa q m mass flow rate, kg/s m tot cumulative mass of dust fed to filter, g q v air flow rate filter, m 3 /s p measured filter pressure drop, Pa t f temperature at air flow meter, C p 1.20 resistance to air flow at air density 1.20 kg/m 3, Pa t temperature upstream of filter, C p a absolute air pressure upstream of filter, kpa ϕ relative humidity upstream of the filter, % p sf air flow meter static pressure, kpa ρ air density upstream of filter, kg/m 3

2017-03-02 6P07577-25-rev1 4 (4) Appendix 3 ISO 16890-3:2016 - Resistance to air flow and arrestance after different dust loading phases Test device: Test no.: Test dust: Hi Flo II XLT 7/640 50+ (HFGX-F7-592/592/640-10-25) SP201702161 Particle Technology, ISO 121031 A2-fine, Batch nr: 9173 Air flow rate: 0.944 m 3 /s Date p 1 m m tot Δp 2 m 1 m 2 Δm ff m d A j A m Pa g g Pa g g g g % % 2017-02-23 72 30 30 75 2141.5 2142.4 0.9 97.0 97.0 2017-02-23 75 40 70 79 2142.4 2142.8 0.4 99.0 98.1 2017-02-23 79 40 110 82 2142.8 2142.9 0.1 99.8 98.7 2017-02-23 82 40 150 84 2142.9 2142.9 0.0.0 99.1 2017-02-23 84 40 190 88 2142.9 2143.0 0.1 99.8 99.2 2017-02-23 88 40 230 91 2143.0 2143.1 0.1 99.8 99.3 2017-02-23 91 40 270 94 2143.1 2143.2 0.1 99.8 99.4 2017-02-23 94 40 310 97 2143.2 2143.3 0.1 99.7 99.4 2017-02-23 97 200 510 115 2143.3 2143.6 0.3 99.9 99.6 2017-02-23 115 300 810 163 2143.6 2144.2 0.6 99.8 99.7 2017-02-23 163 200 1010 225 2144.2 2144.7 0.5 99.8 99.7 2017-02-23 225 200 1210 323 2144.7 2145.1 0.4 99.8 99.7 Mass of tested device Initial mass of tested device: Final mass of tested device: 2089.2 g 3243.4 g Test dust: Particle Technology, ISO 121031 A2-fine, Batch nr: 9173 Symbols and units A j arrestance, % A m average arrestance, % m dust increment, g p 1 resistance to air flow before dust increment (air density 1.20 kg/m³), Pa p 2 resistance to air flow after dust increment (air density 1.20 kg/m³), Pa m d m 1 m 2 m tot m ff dust in duct after device, g mass of final filter before dust increment, g mass of final filter after dust increment, g cumulative mass of dust fed to filter, g mass gain of final filter, g

2017-03-02 6P07577-25-rev1 1 (4) Appendix 4 ISO 16890-4:2016 - AIR FILTER TEST RESULTS SUMMARY +460105165000 GENERAL Test ID: SP201702161 Date of test: 2017-02-23 Operator: CM Particle counter information Air flow measurement: Device obtained (when and how Manufacturer: Model: Coincidence value Annubar, Micatrone obtained): TSI Gmbh OPS 3330 (p/cm 3 ): Air flow sensor MFS-SS The device was sent and obtained on 300 2017-02-14 DEVICE TESTED Model: Hi Flo II Manufacturer: Construction: XLT 7/640 50+ (HFGX-F7-592/592/640-10-25) Camfil AB Pocket filter, 10 Pockets Article number: Type of media: Net effective media area (m 2 ) Filter dimensions (width x height x depth) 610165 Glass 7.3 m 2 592x592x640 mm Filter/media electrostatic charge: Media colour: No green Device Condition: Conditioned per ISO 16890-4 Testing Organization: RISE Research Institute of Sweden Brinellgatan 4, 50115 Borås, Swedan Media adhesive: N/A Other descriptive information: TEST DATA SUMMARY Test air flow rate: Test air temperature: Test air RH: Test aersole: 0.944 m 3 /s 20.7-21.8 C 40.8-47.1 % DEHS (0.3-1 µm) KCl (1-10 mm) RESULTS Resistance to airflow (Pa) Fractional Efficiency (%) Measured: 72 Pa Rated initial: - Measured Rated Upstream concentration Range (µm) Rated Final: - Efficiency Efficiency (particles / dm 3 ) Test item photo 0.30-0.40 0.40-0.55 0.55-0.70 0.70-1.00 1.00-1.30 1.30-1.60 1.60-2.20 2.20-3.00 3.00-4.00 4.00-5.50 5.50-7.00 7.00-10.00 51 60 70 80 90 92 95 98 17657 15088 9742 8931 6389 3357 13440 8079 3576 2035 635 529 Remarks: NOTE: The results of this test relate only to the test device in the condition stated herein. The performance results cannot by themselves be quantitatively applied to predict filtration performance in all "real life" environments.

Pressure differential, 1.2 kg/m 3 (Pa) Fractional efficiency (% ) REPORT 2017-03-02 6P07577-25-rev1 2 (4) Appendix 4 ISO 16890-4:2016 - AIR FILTER TEST RESULTS DETAILS Airflow (m 3 /s) Resistance to Airflow (Pa) 0.379 23 0.30-0.40 0.473 30 0.40-0.55 0.708 49 0.55-0.70 0.944 72 0.70-1.00 1.180 98 1.00-1.30 Conditioned 1.30-1.60 Airflow (m 3 /s) Resistance to Airflow (Pa) 1.60-2.20 0.378 23 2.20-3.00 0.474 30 3.00-4.00 0.708 49 4.00-5.50 0.944 72 5.50-7.00 1.181 99 7.00-10.00 Testing Organization: RISE Research Institute of Sweden Brinellgatan 4, 501 15 Borås, Swedan +460105165000 Test ID: SP201702161 Date of test: 2017-02-23 Operator: CM TEST DATA DETAILS Resistance to Airflow, 1.2 kg/m 3 Fractional efficiency Initial E i, % nominal E d, % nominal Range (µm) air flow air flow 90 80 70 60 50 40 30 20 10 0 0.1 1.0 10.0 Particle size (µm) E d, 50% nominal air flow 52.8 50.8 52.6 61.6 60.1 60.0 71.6 69.6 68.5 80.6 79.5 76.3 90.0 90.0 92.3 91.7 95.3 94.9 98.6 98.4 99.7 99.7 99.8 99.9 99.9 99.9 99.9.0 Ed, % nominal air flow Ei, % nominal air flow Ed, 50% nominal air flow 120 80 60 40 20 0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 Airflow (m 3 /s) Pressure differential as a function of the air flow rate, Initial Pressure differential as a function of the air flow rate, Conditioned CONDITIONING PROCEDURE Date: 2017-02-20-2017-02-21 Temperature in the chamber: 21.6-22.7 C Relative humidity in the chamber: 24-30 % Atmospheric pressure: - NOTE: The results of this test relate only to the test device in the condition stated herein. The performance results cannot by themselves be quantitatively applied to predict filtration performance in all "real life" environments.

2017-03-02 6P07577-25-rev1 3 (4) Appendix 4 Efficiency measurement Upstream count data OPC bin d a, i Upstream efficiency count data µm 1 2 3 4 5 U e,tot 1 0.35 17750 17646 17730 17633 17524 88283 2 0.47 14940 15113 15169 15080 15137 75439 3 0.62 9732 9740 9805 9798 9635 48710 4 0.84 8840 8914 8950 9065 8888 44657 5 1.14 6826 6313 5934 6700 6171 31944 6 1.44 3566 3234 3215 3532 3237 16784 7 1.88 14178 13438 12823 13843 12919 67201 8 2.57 8313 8043 7815 8372 7852 40395 9 3.46 3692 3643 3390 3699 3457 17881 10 4.69 2155 2051 1924 2099 1946 10175 11 6.20 661 617 632 644 623 3177 12 8.37 541 550 493 532 530 2646 Note: All data shown is the number of particle counts for 60 s Efficiency measurement Downstream count data OPC bin d a, i Downstream efficiency count data µm 1 2 3 4 5 D e,tot 1 0.35 8128 7993 8261 8015 8048 40445 2 0.47 5857 5894 5919 6030 5849 29549 3 0.62 2949 2980 3002 3064 3042 15037 4 0.84 1833 1888 1812 1886 1859 9278 5 1.14 652 603 603 655 631 3144 6 1.44 259 235 231 271 231 1227 7 1.88 606 668 624 637 580 3115 8 2.57 115 119 113 126 124 597 9 3.46 9 14 11 15 12 61 10 4.69 2 3 4 2 3 14 11 6.20 1 1 0 1 2 5 12 8.37 0 0 0 1 0 1 Note: All data shown is the number of particle counts for 60 s Efficiency measurement Final results and uncertainty OPC bin d a, i Penetration data reduction Uncertainty limits Uncertainty Efficiency µm P δ e Static Dynamic Pass/Fail % 1 0.35 0.492 0.006 0.008 0.05 0.034 Pass 50.8 2 0.47 0.399 0.007 0.009 0.05 0.028 Pass 60.1 3 0.62 0.304 0.010 0.012 0.05 0.021 Pass 69.6 4 0.84 0.205 0.004 0.005 0.05 0.014 Pass 79.5 5 1.14 0. 0.004 0.005 0.05 0.007 Pass 90.0 6 1.44 0.083 0.004 0.005 0.05 0.006 Pass 91.7 7 1.88 0.051 0.003 0.004 0.05 0.004 Pass 94.9 8 2.57 0.016 0.001 0.001 0.05 0.001 Pass 98.4 9 3.46 0.003 0.001 0.001 0.05 0.001 Pass 99.7 10 4.69 0.001 0.000 0.001 0.05 0.000 Pass 99.9 11 6.20 0.001 0.001 0.001 0.05 0.000 Pass 99.9 12 8.37 0.000 0.001 0.001 0.05 0.000 Pass.0 d a, i : Geometric mean diameter of a size range i, µm P a δ e the final penetration for a given particle size the standard deviation of the penetration for a given particle size the uncertainty of the penetration for a given particle size

2017-03-02 6P07577-25-rev1 4 (4) Appendix 4 Efficiency measurement, 50% nominal air flow Upstream count data OPC bin d a, i Upstream efficiency count data µm 1 2 3 4 5 U e,tot 1 0.35 19316 19345 19263 19632 19227 96783 2 0.47 16944 16959 16859 16647 16718 84127 3 0.62 11283 19 10900 10914 11134 55240 4 0.84 10145 10267 10178 61 10229 50880 Note: All data shown is the number of particle counts for 60 s Efficiency measurement, 50% nominal air flow Downstream count data OPC bin d i Downstream efficiency count data µm 1 2 3 4 5 D e,tot 1 0.35 8360 8621 8665 8521 8478 42645 2 0.47 6357 6515 6792 6695 6653 33012 3 0.62 3440 3668 3555 3574 3451 17688 4 0.84 2356 2501 2495 2380 2481 12213 Note: All data shown is the number of particle counts for 60 s Efficiency measurement, 50% nominal air flow Final results and uncertainty OPC bin d a, i Penetration data reduction Uncertainty limits Uncertainty Efficiency µm P δ e Static Dynamic Pass/Fail % 1 0.35 0.474 0.009 0.011 0.05 0.033 Pass 52.6 2 0.47 0.400 0.013 0.017 0.05 0.028 Pass 60.0 3 0.62 0.315 0.015 0.018 0.05 0.022 Pass 68.5 4 0.84 0.237 0.006 0.008 0.05 0.017 Pass 76.3 d a, i : Geometric mean diameter of a size range i, µm P a δ e the final penetration for a given particle size the standard deviation of the penetration for a given particle size the uncertainty of the penetration for a given particle size

2017-03-02 6P07577-25-rev1 1 (1) Appendix 5 Fig 1. Overview of the test item. Fig 2. Label on the test item. Fig 3. Media in the test item.

2017-03-02 6P07577-25-rev1 1 (1) Appendix 6 The interpretation of test reports according to ISO 16890:2016 This brief review of the test procedures, including those for addressing the testing of electrostatic charged filters, is provided for those unfamiliar with the procedures of this series of ISO standards. It is intended to assist in understanding and interpreting the results in the test report/summary. (For further details of procedures the full ISO 16890 document series shall be consulted). Air filters may rely on the effects of passive static electric charges on the fibres to achieve high efficiencies, particularly in the initial stages of their working life. Environmental factors encountered in service may affect the action of these electric charges so that the initial efficiency may drop substantially after an initial period of service. This could be offset or countered by an increase in efficiency ( mechanical efficiency ) as dust deposits build up. The reported, untreated and conditioned (discharged) efficiency shows the extent of the electrical charge effect on initial performance and indicates the potential loss of particle removal efficiency when the charge effect is completely removed and when at the same time there is no compensating increase of the mechanical efficiency. These test results should not be assumed to represent the filter performance in all possible environmental conditions or to represent all possible real life behavior.