Sheath Air Purge Flow Filter for Nephelometer Back Catalog number: 385-0112-01 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended GCS25080 Cassette, 25mm, Classic Style, PCM, 0.8µm, MCE, No Grid, 50Box Price on request 811-9924-01 Cyclone, BGI4L Aluminum Cyclone (2.2LPM Respirable-US) (Uses 37mm Cassettes) Price on request GFPC225 Filter, 25mm, 0.2µm, Polycarbonate, Plain White, 100/Pack Price on request