Test Items

Standard

Result

Appearance

White or similar white powder

Complies

Hyaluronic Acid

≥95%

96.8%

Glucuronic acid

≥40%

48%

Molecular weight

≥8.0X 105

13.3 X 105

PH

6.0-7.5

6.51

Solution transmittance

98.5%

99%

Loss on drying

≤10%

9.7%

Residue on ignition

≤20%

Complies

Protein

≤0.1%

0.05%

Heavy metal

<20ppm

Complies

Bacterial counts

<1000cfu/g

Complies

Mold and Yeast

<100cfu/g

Complies

Salmonella 

Negative 

Negative 

E.Coli

Negative 

Negative 

Staphylococcus aureus

Negative 

Complies