Filter, 37mm, 0.8µm, Polycarbonate, Plain White, 1 Back Catalog number: GFPC837 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended SC-8 Tedlar Bag (25.0L) Price on request 910-0905-EU-R GilAir-Plus Data Logging 5-Pump Starter Kit, Euro Price on request 811-9917-02 Go-Cal Replacent Tubing Kit Price on request