Filter Cassette Holder Kit (required when sampling Back Catalog number: 800143 Manufacturer: SENSIDYNE Availability: 3 weeks Price on request - + Recommended TE-21 Teflon Bag, On-Off Valve (1.2L) Price on request C-FFP-01 ACTI-VOC PLUS fast-flow Pump Kit Price on request 811-0509-01-R USB Wall Power Adapter Price on request