Filter inside low flow modules 800518 & 800519 Back Catalog number: 201119 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-0507-01-R Power Adapter, Universal Wall w/USB A to USB B cab Price on request GF25080GRG Filter, MCE, 0.8µm 25mm, PCM, with Green Grid Lin Price on request 910-0910-NO-R GilAir-Plus Data Logging Single Starter Kit, Bluet Price on request