Filter Cassette Holder Kit (required when sampling Back Catalog number: 800143 Manufacturer: SENSIDYNE Availability: 3 weeks Price on request - + Recommended 910-0801-04 Gilian 5000 5-Pack, UL ATEX 120V/240V , No Cord Price on request GH37 Housing, 37mm 3pc Opaque, 50/Box Price on request GFPC447 Filter, 47mm, 0.4µm, Polycarbonate, Plain White, 1 Price on request