Filter, PTFE with Polypropylene Backing, 0.5µm, 37 Back Catalog number: GF37050T Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 783-0012-01-R Battery Pack NiMH Rechargeable Price on request 385-0114-01 Zero Cap, Black Rubber for Nephelometer Price on request 811-0944-02-R GilAir Plus, DL to DL BlueTooth and Motion Upgrad Price on request