Material: PP, modified acrylic (MBS). Sterile For filtration of sample volumes up to 50 ml. Millipore Express ® PES membrane with high flow rate and low protein binding: for routine sterile filtration of tissue culture media, sera, buffers and other aqueous solutions Durapore ® PVDF membrane with very low protein binding: for sterile and clear filtration of aqueous solutions Hydrophilic nylon mesh filter: for removing coarse particulate matter, e.g. for applications with stem, heart muscle and nerve cells, or skeletal tissue Procedure: Connect the filter unit to the centrifuge tube containing the sample. Rotate the filter unit through 180° and apply vacuum.Optional: screw the funnel attachment onto the sterile filter unit, fill with the sample and apply vacuum, Steriflip ® filter unit filters directly into a sterile 50 ml centrifuge tube. Vacuum filter unit Steriflip ® Delivery incl. fitted 50 ml centrifuge tube and lid (each packaged separately) and a single tube holder (blue). Delivery without funnel attachment or second 50 ml centrifuge tube (e.g. Art. No. N462.1), please order separately.