Filter inside low flow modules 800518 & 800519 Back Catalog number: 201119 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-0504-01-R Single Unit Replacement Charger only, USB Gilibrator-2 Price on request GCU37500PVCMW-2 Cassette, 37mm 2pc 5.0µm, PVC Matched, (50µg), 50/Box Price on request GFPC447 Filter, 47mm, 0.4µm, Polycarbonate, Plain White, 100/Pack Price on request