Millipore Sigma® Millipak® Express 40 Filter

The Millipak® 0.22μm hydrophilic membrane filter produces particulate- and bacteria-free water at the point of dispense of the water purification systems. The filter is designed with a 0.22μm PES (polyethersulfone) asymmetric membrane filter, heat-sealed on a SAN (styrene acrylonitrile) housing to minimize organic and inorganic extractable release. The filtered water is recommended to prepare microbiological culture media, biochemistry buffers and reagents, and suitable for analytical applications.