Biospin Gel Extraction Kit provides a simple, rapid and effective method to purify DNA fragments from agarose gel in TAE or TBE buffer. DNA fragments ranged from 60bp to 23kb are purified from (up to 3% standard or high/low-melt) gel using Spin column. The recovery rate is 10~55% (<100bp DNA fragments), 90~99% (0.1~10kb DNA fragments), 20~70% (＞10kb DNA fragments). Purified DNA can be used directly for kinds of downstream molecular biological experiments such as cloning, sequencing, restriction enzyme digestion and so on.