Environmental Express CS25080 25 mm Polypropylene Filter Asbestos PCM Air Monitoring Cassette With 2" Length Cowl And 0.8 µm Mixed Cellulose Ester Filter (Include Cassette Labels) 50/PK
Environmental Express CS25455-50 25 mm Polypropylene Banded Asbestos TEM Air Monitor Cassette With 2" Length Cowl And 0.45 µm Mixed Cellulose Ester Filter (50 Per Box) (1/BX)
Environmental Express CU37080 37 mm Crystal Styrene 3-Piece MCE Air Monitor Cassette With 1/2" Length Cowl And 0.8 µm Mixed Cellulose Ester Filter (50 Per Box) (12/BX)
Environmental Express CU37500PVCPW 37 mm Crystal Styrene 3-Piece Preweighed Air Monitor Cassette With 1/2" Length Cowl And 5 µm PVC Filter (50 Per Box) (1/BX)