Filter inside low flow modules 800518 & 800519 Back Catalog number: 201119 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 910-0914-NO-R GilAir-Plus Data Logging 3-Pump Starter Kit, Bluet Price on request KB-50 Kynar Bag 50.0L Price on request GF37500PVC Filter, PVC, 5.0µm, 37mm, 100/Pack Price on request