From Aspergillus oryzae Activity:5,000 units/gm Unit Definition: one unit will hydrolyze 1.0 µmole of o-nitrophenyl- -D- galactoside to o-nitrophenol per minute at pH 4.5 and 30°C. Lactose is hydrolyzed at approximately the same rate., UoM: 1 * 25 g

This combination does not exist.