| Item | Specification |
|---|---|
|
Appearance |
White to off White Powder |
|
Identification |
HPLC retention time correspond to WRS |
|
Water Content |
≤8.0% |
|
PH |
2.0-4.0 |
|
Heavy metals(Pb) |
≤10 ppm |
|
Lead(Pb) |
≤0.5 ppm |
|
Cadmium(Cd) |
≤0.5 ppm |
|
Mercury(Hg) |
≤0.5 ppm |
|
Arsenic(As₂O₃) |
≤0.5 ppm |
|
Total plate count |
≤1000cfu/g |
|
Yeast &Molds |
≤100cfu/g |
|
E.Coli |
Negative in 10g |
|
Salmonella |
Negative in 10g |
|
Assay |
≥98.0% |
|
Purity |
≥99.0% |