Teflon Bag, On-Off Valve (1.2L) Back Catalog number: TE-21 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 910-0902-EU-R GilAir-Plus Data Logging Single Starter Kit, Euro Price on request GCU37AE Cassette, 37mm 3pc w/ Type A/E Glass Fiber, 50/Box Price on request 811-1004-02 PM-10 Impactor Kit, Replacement for Models 810-100 Price on request