Steritop bottle top filter units provide a large filter area for rapid sterile filtration of aqueous fluids into narrow-mouth (33 mm) bottles. A small tab inside the funnel secures an optional prefilter in-place during filtration. For added protection against contamination, the threads for bottle attachment have been slightly recessed in case the funnel accidentally touches a work surface.
Units with fast flow and low protein binding 0.22 µm Millipore Express PLUS (PES) membrane for sterilization of aqueous solutions. Sterilize tissue culture media and additives, protein solutions, virus suspensions, DNA, and other aqueous solutions