Teflon Bag, On-Off Valve (0.5L) Back Catalog number: TE-22 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 910-0801-04 Gilian 5000 5-Pack, UL ATEX 120V/240V , No Cord Price on request TE-21 Teflon Bag, On-Off Valve (1.2L) Price on request 385-0114-01 Zero Cap, Black Rubber for Nephelometer Price on request