Freeze Precipitation

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Freeze Precipitation

Freeze precipitation is the process by which product is isolated from a solvent through a decrease in solubility achieved by lowering the temperature of the solvent. This process generally relies on the solvent being completely saturated or super-saturated with product. Freeze precipitation is generally the fastest method by which product can be isolated immediately following extraction, but it relies on the use of only very specific solvents. This method is preferably used in conjunction with A/B and STB techniques though can be used alongside variations of drier techniques.