Filter, PTFE with Polypropylene Backing, 0.5µm, 37 Back Catalog number: GF37050T Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 783-0013-01-R Battery Pack AA Alkaline Price on request 811-1709-01-R Gilibrator 3, Standard Flow Dry Cell (Flow Range 5 Price on request 811-1004-02 PM-10 Impactor Kit, Replacement for Models 810-100 Price on request