Housing, 37mm, 3Pc, 50/Box Back Catalog number: GCO37050 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 380-0035-01 Nephelometer Pump Assy, Replacement Price on request 800256 Single Variable Flow Kit, 7-10 x 150mm Price on request 811-1709-01-R Gilibrator 3, Standard Flow Dry Cell (Flow Range 5 Price on request