# Temperature mixing formula

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This page is to help calculating the amount of one liquid you need to add to another to get a special temperature. This is often usefull if you perform a temperature shift for example with cultures of organisms that carry a temperature sensitive mutant.

Here is a form of Richmann’s calorimetric mixing formula:

$m_{1}= \frac{m_{2}\cdot T_{2}+ T_{m}\cdot m_{2}}{T_{m}-T_{1}}$