All asbestos and fibers sampling – use 25mm filter and cassette. While selection of a specific cassette size/type and filter membrane should be determined by review of the NIOSH sampling guide, the following rules generally apply All dusts, fumes and powders sampling – use 37mm filter and cassette.
Cassette HolderĬonsists of tubing with clip, designed to mount the cassette to the worker collar close to the breathing zone. The seal provides a positive non-tampering indication when the cassette is received by the lab for analysis. Cellulose Shrink SealsĪvailable in both 25mm and 37mm sizes, these bands are applied wet around the cassette and shrink when dry to form a tight seal. PVC, Teflon, Glass fiber, Silver, Quartz and MCE (Mixed cellulose ester). The carbon imbedded body reduces static charge. It has a two-inch extension cowl, assuring proper fiber distribution for microscopic fiber counts. 25 mm Filter CassetteĪvailable only in three-piece style, this cassette is used only for "Open Face" sampling and meets specifications for asbestos sampling, as described by NIOSH, OSHA and EPA. Three-piece cassettes allow open face sampling, typically for asbestos and other fibers. These cassettes meet the NIOSH requirements for sampling most dusts, fumes and mists. Cassette Sizes and Types 37 mm Filter CassetteĪvailable in both a standard two-piece style and a three-piece style.
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