| ITEM | STANDARD |
| Appearance | White powder and White granular |
| Test of identification | Positive |
| Odour and taste | neutral |
| Colour fresh(10%solution) | 98.0-103.0% |
| Clarity and colour of solution | 5ppm K2Cl2O7 |
| PH (5g product+95g water) | passes test JSFA |
| Acidity | 22.0-27.0% |
| Acidity/alkalinity | 6.0-8.0 |
| Organic volatile impurities | Max 0.45% of the dry matter expressedas lactic acid |
| Heavy metals total | passes test EP |
| Iron | passes test USP |
| Lead | Max 10ppm |
| Fluoride | =<0.0025% |
| Arsenic | Max 2ppm |
| Chloride | Max 15ppm |
| Sulphate | Max 2ppm |
| Mercury | Max 200ppm |
| Barium | Max 400ppm |
| Magnesium and alkalisalts | Max 1ppm |
| Volatile fatty acid | Passes test EP5 |
| Organic volatile impurities | Max 1.0% |
| Volatile fatty acid | Passes test USP |
| Organic volatile impurities | Meet the requirements USP |