Sterile Membranes made of surfactant-free cellulose acetate (SF CA ) with extremely low protein binding and high flow rate. SFCA is ideal for applications in tissue culture and for filtration of sera containing protein, as the membranes do not contain any surfactants that could have a toxic effect on cells. Type: Yellow 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 Art. No. AC27.1 and AC28.1 are delivered with 12 glass fibre prefilters included. Filtration unit with SFCA membrane Pore size 0.45 μm