3 Enhanced Chemical Tolerance High Corrosion Resistance ePTFE media is proven to be resistant in highly corrosive environments and will withstand attacks from common decontamination chemicals. Both components of the ePTFE media, the membrane and non-woven layers, are stable against exposure at the prescribed time and concentration for the above disinfectant agents. Superior Water Resistance Based on AAF Flanders’ test lab results, ePTFE Media provides superior water resistance in comparison with ultrafine microglass media, reducing damage risk. Negligible Offgassing ePTFE media has extremely low offgassing of chemical components, resulting in the highest quality clean air available. ePTFE Filtration Technology Ultrafine Microglass Media BEFORE SEM photos at 5,000x magnification. MEGAcel® II—First and Only PAO Compliant ePTFE Media HEPA Filter The purpose of installed HEPA filter integrity testing, also called in-situ testing, is to confirm a flawless performance during normal operation. With AAF Flanders’ new ePTFE Filtration Technology, MEGAcel II filters can now be scan tested with the industry standard photometer at standard aerosol concentrations, as well as the low aerosol concentration Discrete Particle Counter (DPC) method. The MEGAcel II filter contains dual-layer ePTFE media specifically developed to retain equivalent amounts of PAO aerosol with the same or lower pressure drop increases as ultrafine microglass. The dual-layer ePTFE media allows for the in-depth capture of progressively smaller solid particles. Independent laboratory studies have shown that MEGAcel II filters with ePTFE media have superior PAO holding capacity over traditional ultrafine microglass HEPA media, as seen in the results below. 1st ePTFE Layer (Low Fibril Density) 2nd ePTFE Layer (High Fibril Density) 0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 63 Test Intervals 2 test Intervals is representative of 1 year in use 5 years 10 years Ultrafine Microglass ePTFE Filtration Technology 1.20 1.00 0.80 0.60 0.40 0.20 0.00 Differential Pressure (H2O) 1 Hour Test Intervals (@15µg/l) Time vs. DP for typical 50mm media packs Damage after use of Hydrogen Peroxide (H2O2) for cleanroom sterilization. AFTER
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