... of impurities limits1, dry weightlessness: 5% or (China pharmacopoeia detection method) 2, grey points: 6% or 20% specifications ( ... , heavy gold is: more than 10 PPM (China pharmacopoeia detection method) 4, agriculture residual: PPM 5, 2 or solvent ... efficacyThorn briers extract thistles saponins have lower blood pressure, fall hematic fat, fight artery congee sclerosis, consenescence and strong ...