Cassette, 37mm, 3 pc, 0.8µm Polycarbonate, 50/Box Back Catalog number: GC738PC Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 911-9901-NO-R Single Unit Charger w/ Power Adapter, USB GilAir-3 Price on request 850082 PC Cable, Flow Monitoring Software Kit (cable only Price on request 910-1708-EU-R Gilibrator 3Low Flow Dry Cell Base Pack (No Case) Price on request