take 1 ml, add 9 ml water.
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Add 2 mL of culture to 20 mL of buffer. 2/20 = 1/10
10 as a percentage of 2 is 500% but 2 as a percentage of 10 is 20%
what is dilution rate for glycos
It is: 10/40 = 25% as a percentage
20% is 2 out of 10 as a percentage.