Calculator
Concentration Equalizer
Bring a whole set of samples to one concentration. Paste the values from your NanoDrop or plate reader, set the target and the final volume, and get the sample and diluent for every tube.
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Decimals and rounding
Far left picks a sensible number of decimal places for each value.
How it works
For each tube: sample = target × final volume ÷ measured, the rest of the final volume is diluent. A sample that is already below the target goes in undiluted, because a dilution cannot concentrate.
Under 1 µl the calculator suggests a 1:10 pre-dilution, because very small volumes are hard to pipette accurately. Mass units (ng/µl) and molar units (nM) cannot be mixed without a molecular weight.