How many E. coli = 1 O.D. unit?
di58 at pop.th-darmstadt.de
Wed Jun 28 09:06:28 EST 1995
In article <3sb250$nbu at riscsm.scripps.edu>, "Edward K.L. Chan" <echan at scripps.edu> says:
> I wonder if someone may be able to provide a reliable formula to calculate
>the number of DH5-alpha or XL1-Blue based on O.D. measurement. Thanks in advance.
with E.coli an OD (420nm) of 0.06 corresponds to 2x10E7 cells per ml
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