Transformation efficiency (archive)
If you are getting low transformation efficiency with chemically competent cells:
There were impurities in the DNA. Remove phenol, protein, detergents, and ethanol, by ethanol precipitation or GlassMAX DNA Isolation Systems. There was excess DNA. Use no more that 1-10 µg of DNA in <5 pl volume/100 pl of cells. (Shanta Dube, Life Technologies, Inc.)
Last update 28-Jun-2002, Rating Fair of 2 votes.