Growth media for the preparation of highly competent E. coli cells.

• Formulated growth mediua for making highly competent E. coli for DNA transformation
• Choice growth media for difficult-to-transform E. coli strains

Compared to classic SOB growth medium, ZymoBroth increases transformation efficiency, typically on the order of 5 - 100 fold (depending on the E. coli strain). ZB media has been tested on a wide range of E. coli strains. ZB medium stimulates the transformation efficiency of all E. coli strains tested, including K12 derivatives (such as JM109, HB101 and more) and B strain derivatives (such as BL21 and more).