Filter, 37mm, 0.4µm, Polycarbonate, Plain White, 1 Back Catalog number: GFPC4537 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800256 Single Variable Flow Kit, 7-10 x 150mm Price on request 380-0035-01 Nephelometer Pump Assy, Replacement Price on request 800772 Impinger, S-P, Micro, PVC Coated glass (2 oz./50m Price on request