Description
Description
Primary H.E.P.A. cartridge filter with refillable adsorption module with activated alumina and potassium permanganate, plus reusable top and bottom cover fittings. HEPA offers 99.97% efficiency using thermally generated dioctylphthalate (DOP), with particles .3 micron or larger in size as the challenge. Prefilter provides 30, 35% efficiency based on ASHRAE 52 Test Method. For use with SP-981-2A or SP-981-2B portable systems. Filter & Filter Fittings for the Extract-All® Air Cleaner Fume Extractor S-981-2B and SP-981-2B: Same as F-981-4A, except with activated alumina with potassium permanganate, instead of carbon.
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