Teflon Bag, Septum Valve (50L) Back Catalog number: TE-28 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended GF25500 Filter, MCE, 5.0µm, 25mm, 100/Pack Price on request 811-9917-04 Go-Cal Carrying Case, Soft Price on request 810-0902-01-R Data Logging Pump Only (No Dock) Price on request