Trypsin is a serine protease found in the digestive system of many vertebrates, where it hydrolyzes proteins. It is produced in the pancreas as the inactive proenzyme, Trypsinogen. Trypsin is one of the three principal digestive proteinases, the other two being Pepsin and Chymotrypsin.

Trypsin 1:250 powder is an irradiated mixture of proteases derived from porcine pancreas. Due to its digestive strength it is widely used for cell dissociation, during routine cell culture passaging, and primary tissue dissociation.