Filter inside low flow modules 800518 & 800519 Back Catalog number: 201119 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 910-1305-NO Gilian 800i,5-Pack Kit, No Cord Price on request 811-9918-03 Go-Cal AC Adapter Euro, 100-240V Price on request GF37050T Filter, PTFE with Polypropylene Backing, 0.5µm, 37 Price on request