Stage: 4 Challenge Level: 
This interactive diagram shows a dilution series made from four dilutions of an initial bacterial solution. At each stage of the dilution, a quantity of the culture is diluted with a quantity of the medium
This text is usually replaced by the Flash movie.
Try to calculate the dilution factor for various combinations of initial numbers. Can you create a general rule for the overall dilution? (Full screen version )
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Published January 2010.
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