Filtration kit is intended for filtering samples with a volume of 1-50 ml. It effectively protects the column inlet filter from mechanical contamination. The membrane diameter is 25 mm. Membranes are made of PTFE, capron, cellulose acetate. The pore size is 0.2, 0.25, and 0.45 microns. The number of membranes is 100 pcs.