Cartridge Change Frequently Asked Questions (FAQs)
2012-1-17u2002·u2002Service life determination for particulate filters is not required under 1910.134; it is only required for gases and vapors. Often the particulate filtration efficiency will improve during use ... This long service life is supported by data published in the literature (Am. Ind. Hyg. Assoc. J 54:432-439 1993). Chemical cartridges work quite well and
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