Appearance White crystal, no impurities, sweet taste, no peculiar smell
Trehalose content (%) ≥99%
PH 5.0~6.7
Burning residual (%) ≤0.02
Dry weight loss (%) ≤1.0
Lead (Pb) (mg/kg) ≤1.0
Arsenic (As) (mg/kg) ≤1.0
The total number of colonies (cfu/g) ≤400
pathogenic bacteria Not detected
Coliform bacteria MPN/100g negative