Physical and chemical hygiene indicators should comply with the provisions of Table 2. Table 2 Project index inspection method Residue on sieve, (0.2mm aperture) % ≤2.5 GB/T15691 Moisture content, % ≤14 GB/T12729.6 Total ash content, % ≤10 GB/T15691 Acid-insoluble ash content, % ≤5 GB/ T12729.9 Lead (calculated as Pb), mg/kg ≤3.0 GB5009.12 3.4 Microbial indicators should comply with the provisions of Table 3. Table 3 Item index test method Total number of colonies, CFU/g ≤15000 GB4789.2 Coliform bacteria