lyophilized powder, ≥10,000 units/mg protein

aqueous solution, ≥30,000 units/mg protein

aqueous suspension, 40,000-60,000 units/mg protein (E1%/405)

≥90% (SDS-PAGE), buffered aqueous solution, ≥30,000 units/mg protein

solution, dark brown

pH 5.4(isoelectric point), ammonium sulfate suspension, enzyme from bovine liver

aqueous suspension, brown, >10,000 U/mL

buffered aqueous suspension, ≥3,000 units/mL