Teflon Bag, Septum Valve (4.7L) Back Catalog number: TE-27 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 911-0601-EU-R Single Unit Charger w/ Power Adapter, USB, BDX-2- Price on request 811-1004-01 PM-2.5 Impactor Kit, Replacement for Models 810-10 Price on request 800485-111-01 GilAir-3 R Pump, No Battery Price on request