Cellulose Nitrate (CN) Membrane Filter 25 mm | grey | white Cellulose nitrate (CN) membrane | Hydro Diameter: 25 mm Color Grid Color: grey white Material: Cellulose nitrate (CN) membrane Reaction to water: Hydrophilic Type: Membrane filter Packaging: Non-sterile, bulk packed Pore size: 0,45 µm Pack size: 100 If agar plates or absorbent pads to be wetted with liquid culture medium are used instead of Nutrient Pad Sets, Sartorius cellulose nitrate (cellulose ester) membrane filter are recommended. Naturally, the membrane filters must be free of microbes. For this purpose, they can be boiled or autoclaved. These membranes are offered in a choice of three different colors to suit the specific test application, and provide a high-contrast background to colonies or particles.These membrane filters are in accordance with the following norms: ISO 7704, ISO 7899-2, ISO 8199, ISO 9308-1 and EN 12780. In addition to this they have been manufactured for use especially at the same time with SartoriMeer tonenMinder tonen