One USP unit of lipase activity is contained in the amount of pancreatin that liberates 1,0 µEq of acid per minute at a pH of 9,0 at 37 °C under the conditions of the assay for lipase activity.

• Partly soluble in water and insoluble in alcohol

Lipases are a subclass of the esterases. It catalyses the hydrolysis of emulsified esters of glycerol and long chain fatty acids.