Environmental Express¨ 37 mm Crystal Styrene 3-Piece Preweighed Air Monitor Cassette With 1/2" Length Cowl And 5 µm PVC Filter (50 Per Box)

Environmental Express¨ 37 mm Pre Weighed 5 micron PVC Filter Air Monitor Cassette allows the user to position the cassette upright after sampling and serves as a solid base for cutting the filter wedge. Cassette features a tamper resistant vinyl sealing band that will not loosen when exposed to high humidity or extreme temperatures. It is individually numbered for easy identification and sample tracking.