1, Resveratrol 2, variety: Variety: Polygonum cuspidatum extract 3,purity: 98% 4, sample free 5, prompt delivery ITEMSPECIFICATIONTEST RESULTAppearance White ... crystalConformsOdorCharacteristicConformsResveratrolHPLC99%loss on drying≤5%0.1% Heavy Metal,mg/kg ≤ 10<10Arsenic,mg/kg≤ 1<0.5Bacterial Number,cfu/g≤ 1000ConformsMOLD ... 3 years when properly stored Pure Natural Resveratrol Powder 20%~99%