Teflon Bag, On-Off Valve (1.2L) Back Catalog number: TE-21 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 297-0012-01 USB Communications Cable for Nephelometer Price on request TE-28 Teflon Bag, Septum Valve (50L) Price on request 811-1707-01-R Gilibrator 3, Base Only Price on request