Moisture: Maximum 7.5%; Purple grains: Maximum 10%; Total fermentation: Minimum 80%; Slate-colored grains: Maximum 5%; Lead (Pb): Not exceeding 1.0 mg/kg; Arsenic (As): Not exceeding 1.0 mg/kg; Cadmium (Cd): Not exceeding 0.5 mg/kg; Mercury (Hg): Not exceeding 0.1 mg/kg