PCR Purification Kit utilizes a proprietary silica-based membrane technology in the form of a convenient spin column, eliminating the need for tedious resin manipulations or toxic phenol-chloroform extractions. It effectively removes primers, dNTPs, unincorporated labeled nucleotides, enzymes, and salts from PCR and other reaction mixtures. The kit can be used for purification of DNA fragments from 25 bp to 20 kb with recovery rates up to 100%. Each purification column has a total binding capacity of up to 25 µg of DNA, and the entire procedure takes 5 minutes. The purified DNA can be used in common downstream applications, such as sequencing, restriction digestion, labeling, ligation, cloning, in vitro transcription, blotting or in situ hybridization.