Teflon Bag, On-Off Valve (1.2L) Back Catalog number: TE-21 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 385-0112-01 Sheath Air Purge Flow Filter for Nephelometer Price on request GCO37DNL Band, 37mm Shrink, White, 1000/Pack Price on request 910-0910-EU-R GilAir-Plus Data Logging Single Starter Kit, Bluet Price on request