Filter Cassette Holder Kit (required when sampling Back Catalog number: 800143 Manufacturer: SENSIDYNE Availability: 3 weeks Price on request - + Recommended TE-22 Teflon Bag, On-Off Valve (0.5L) Price on request 800266-1 Generator Cell/Sensor, Standard Flow, Gilibrator-2 Price on request 811-1702-EU-R Gilibrator 3 Charger w/ EU Cord Price on request