Teflon Bag, Septum Valve (50L) Back Catalog number: TE-28 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 910-0902-EU-R GilAir-Plus Data Logging Single Starter Kit, Euro cord Price on request 850190M Manual, Gilibrator-2 Price on request 811-1708-01-R Gilibrator 3, Low Flow Dry Cell (Flow Range 5 - 450 cc/min) Price on request