TEST ITEMS
|
ANALYSIS METHODS |
SPECIFICATION
|
|
Appearance |
Sensorial |
Brownish/Yellowish Powder |
|
Odor |
Sensorial |
Light sourness |
|
Solubility |
Sensorial |
Soluble in water , insoluble in organic solvents , ex: alcohol etc |
|
Purity UV |
Q/PTHG |
≥ 90% |
|
PH |
Q/PTHG |
2-3 |
|
Transmittance UV |
Q/PTHG |
≥ 60% |
|
Turbidity |
Q/PTHG |
≤ 40% |
|
Loss on drying |
Q/PTHG |
< 8% |
|
Protein |
GB5009.5-94 |
< 5% |
|
Heavy metal (by Pb) |
GB5009.12-94 |
≤ 10 ppm |
|
Arsenic |
GB5009.11-94 |
≤ 2.0 ppm |
|
Microbial count. |
GB4789.2-94 |
< 3x103cfu/g |
|
Escherichia coli |
GB4789.3-94 |
Negative |