EC 3.2.1.2 CAZY Family: GH14 From barley flour. Crystalline. In BSA plus ammonium sulphate powder.Contaminants: α-amylase < 0.00001%.Stable at 4°C for > 4 years. Powder enzyme form (2000oL) is for use in AACC and ASBC α-amylase assay procedures.