Filter, Support Pads, Porous Plastic, 37mm, 20.0µm Back Catalog number: GPP3700 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-0908-EU-R Power Supply, Single Station 100-240Vac, 50-60 Hz, Price on request 811-1004-03 TSP Inlet, Replacement for Models 810-1002 and 810 Price on request 380-0035-01 Nephelometer Pump Assy, Replacement Price on request