Filter inside low flow modules 800518 & 800519 Back Catalog number: 201119 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 911-0502-NO-R Single Unit Charger w/ Power Adapter, USB Gilibrat Price on request 800270-2 Gilibrator-2, High Flow Kit, 230V, Euro Cord Price on request 200156-6 Luer Taper Adapter (Packg of 6) Price on request