Supplied as filter funnel only unit for use with DURAN TILT bottle (with GL 45 thread adaptor) or 45mm media bottles Available in three different asymmetric pore size (0.1, 0.2, or 0.45μm) Raised moulded graduation marks for easy reading of volume Manufactured in a Class 100,000 clean room from Class VI, non-cytotoxic materials Sterile