| Item | Specification |
|---|---|
|
Appearance |
White to off-white powder |
|
Identification |
HPLC retention time correspond to WRS |
|
Purity |
≥98.0% |
|
Loss on Drying |
≤2.0% |
|
Ignition Residue |
≤2.0% |
|
Heavy metals |
≤10ppm |
|
Lead(Pb) |
≤0.5ppm |
|
Arsenic(As₂O₃) |
≤0.5ppm |
|
Mercury(Hg) |
≤0.3ppm |
|
Cadmium(Cd) |
≤0.5ppm |
|
Total plate count |
≤1000cfu/g |
|
Yeast &Molds |
≤100cfu/g |
|
Salmonella |
Negative in 10g |
|
S.aureus |
Negative in 10g |