Product standards: Q/SHF 001-2005
Items Specifications
Grade I Grade II
Protein % ≥ 92 ≥ 90
pH (1% water solution) 5-6.5 5.5-7
Water ≤ 5 ≤ 5
Water-insoluble substances % ≤ 0.1 ≤ 0.5
Ash content % ≤ 2 ≤ 4
Molecular weight 500-3000 1000-5000
Transmittancy (1% water solution) ≥ 90 ≥ 90
Arsenic (As) % ≤ 0.0001
Heavy metal (Pb) % ≤ 0.002
Total numbers of colony cfu/g ≤ 1000
Coli group MPN/100g ≤ 30
Pathogenic bacteria (enteric pathogenic bacteria and pathogenic coccus) Not found