Appearance: White powder | Glucuronic Acid (%): ≥45.0 | Sodium hyaluronate(%): ≥93.0 | Transparency(0.5% Water solution ): ≥99.0 | PH(0.5% Water Solution): 5.0-8.5 | Molecular Weight Da: Measured Value | Arsenic,ppm: <2 | Heavy Metal(as pb),ppm: <10.0 | Protein (%): ≤0.05 | Limiting Viscosity,dl/g: Measure Value | Loss on Drying (%): ≤10.0 | Residue on Ignition(%): ≤20.0 | Molds&Yeast,cfu/g: ≤10.0 | Bacteria Count,cfu/g: <100