Go-Cal Replacent Filter Back Catalog number: 811-9917-01 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800217 Impinger, Moisture Trap, Plastic, with 1/4" ID tubing (3 ft) (98ml) Price on request 811-0913-01-R Outlet Fitting, Bag Fill Adapter Price on request 911-0601-NO-R Single Unit Charger w/ Power Adapter, USB, BDX-2-No Cord (Replaces 402119) Price on request