Content：Corosolic acid≥3%（HPLC）
Sterilization method：High temperature
Extracting Agent： Ethanol and water
Particle size：100% pass 80 mesh
Loss on drying：≤5.0%
As content：≤5.0%
Appearance：Yellow Brown Fine Powder
Taste / Odor：Typical
Aflatoxins：Aflatoxin B1 < 2 g/kg,
Sum of Aflatoxins B1, B2, G1 and G2 < 4 g/kg
Heavy metals
Pb:< 1.0ppm,
Cd:< 0.2 ppm,
Hg:< 0.01 ppm,
As:< 0.5 ppm 
Total Plate Count:≤1000cfu/gm
Yeast & Mold:≤100cfu/gm
E.coil:Negative
Salmonella:Negative