Go-Cal Replacent Filter Back Catalog number: 811-9917-01 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended KB-100 Kynar Bag 100L Price on request GFPC225 Filter, 25mm, 0.2µm, Polycarbonate, Plain White, 1 Price on request 380-0035-01 Nephelometer Pump Assy, Replacement Price on request