Sterile Ideal for sterile filtration of culture media and sensitive cell and tissue cultures. Alcohol-resistant nylon membranes with extremely low content (<0.5 percent by weight) of extractable substances and high flow rates with short filtration times. Hydrophilic and free of surfactants. Type: Red colour coding Filtration units made of PS Graduated filter upper sections and filter bottles With quick connector tube adapter and cotton stopper Leakproof screw cap Filtration units are non-pyrogenic and non-cytotoxic Filtration units with a membrane Ø of 75 mm are delivered with 12 glass fibre prefilters included. Filtration unit with nylon membrane Pore size 0.2 μm