DNA Visualizer DX has been improved on its sensitivity of DNA detection. With Gene Coloring Solution, DNA band in agarose gel can be detected > 20 ng. The excised DNA with this kit can be purified by organic solvent extraction or with other commercial kits. (All tested commercial kits worked well.). DNA excised from agarose gel can be used many downstream experiments, such as enzyme digestion, PCR, sequencing, in vitro transcription, as well as cloning.