Divide by the sample volume in ml to get CFUml 100. A site dedicated to learning about microbiology in the laboratory. CFUmL noof colonies x dilution factor volume of culture plate.
Make use of this tutorial to learn how to calculate cfuml with simple steps.
Alternatively if you want CFUg divide the CFU in the whole sample 900 by the grams of extract dissolved 1 to get 900 CFUg. Remember there are many ways to make 110 and 1100 dilutions. For the best answers search on this site httpsshorturlimawzrC. CFUmL Number of bacterial colonies counted on plate x Dilution Factor Volume of culture plate CFUmL 150 x 105 01 150 x 108.