Sterile Disposable filtration unit with hydrophilic polyethersulfone diaphragm (PES). The innovative Rapid-Flow™ design of the filter membrane carrier plate provides faster flow rates and higher flow volumes. The PES membrane with minimal protein binding and a minimal proportion of extractable substances is ideally suited to biological sterile filtration of cell culture media, sera, additives and buffers. Type: Blue colour coding Filtration units made of PS Graduated filter upper sections and filter bottles With quick connector tube adapter and cotton stopper Leak-proof screw cap closure Gamma sterilised and individually packed Filtration units are non-pyrogenic and non-cytotoxic Filtration unit Rapid-Flow™ with PES membrane Pore size 0.45 μm Application examples: 0.45 μm filters ensure particle removal and fluid clarification