Bioruffo
Molecular Biology protocols, utilities and oddities
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When determining the transformation efficiency of a batch of cells, you might be interested in knowing the best conditions (DNA, dilutions) to use for the experiment.
I've created a spreadsheet that will do this for you, and of course it will also calculate the transformation efficiency of your batch, given the number of colonies you've counted.
 
Instructions in a few! (also, see this page)
(It's not hard to use though - give it a try!)
 
Open Office Calc version: transformation_efficiency_assistant.ods