1, Resveratrol 2, Apperance: Powder 3,variety: Giant knotweed extract 4, competitive price 5, sample free Resveratrol SpecificationsAppearanceWhite fine powderIdentificationConsistent with standardAssay (Resveratrol, by HPLC)≥20%≥50%≥98%Sieve100% pass 80 meshBulk density45-55g/100mlLoss weight on drying≤5.0%Ash≤3.0%Arsenic(As)≤1.0mg/kgLead(Pb)≤1.0mg/kgResidual solventsEthanol≤5000mg/kgEthyl ...