... ItemCriterionActualIndividual indexmeasureJudgement1Evaporation residue 40% acetic acid, 60≤3016Eligible°C, 0.5h, mg/L20% grain alcohol,60≤3016Eligible°C, 0.5h, mg ... 5Eligible°C, 0.5h, mg/L2potassium permanganate≤107.6Eligibleconsumption(60°C, 0.5h),mg/L3heavy metal (measure by PH ... )(40% acetic acid,≤10<1Eligible60°C, 0.5h),mg/L4discoloured experiments Soaking ...