Ultrafree filtration syst. MC, mem. PVDF, max. 0,5 ml, violet, pore size 0.65Ultrafree filtration syst. MC, mem. PVDF, max. 0,5 ml, violet, pore size 0. 65 Non sterile Centrifuge filter units for sample volumes of no more than 0. 5 or 2. 0 ml. For use in fixed angle rotors for 1. 5 or 15 ml sample tubes. Filter unit and collector tube are made of PP. Hydrophilic Durapore PVDF membrane: extremely low protein binding. Suitable for removal of particulate matter and precipitate from aqueous samples, and for protein and nucleic