Test Items

Standard

Appearance

White powder

Hyaluronic Acid

≥95%

Molecular weight

(1.0-1.5) X 106

PH

6.0-7.5

Loss on drying

<10%

Protein

≤0.1%

Nitrogen

2.0-3.0%

Heavy metal

<20ppm

Bacterial counts

<1000cfu/g

Mold and Yeast

<100cfu/g