In many cases milk must be clarified when first received by the dairy to remove impurities.
If process conditions are favorable it is also possible to obtain an efficient reduction in the amount of leucocytes and bacteria.
The milk clarifier can operate with cold or warm milk; however higher temperatures increase clarification efficiency.
Centrifuges for milk separation (skimming) can also perform clarification but their efficiency is low in comparison to using special milk clarifiers.