... % Natural 2.GMP Kosher 3.FREE sample4.Polygonum Cuspidatum Extract Resveratrol 20%~99%Product Specification : 1.Resveratrol 20%, 50%, 70%, 95 ... 98%, 99%2.Latin Name: Polygonum Cuspidatum3.Product Type: White powdered extract4.Part of the Plant Used: Root & Rhizome5.Extract Method: ... Plate Count1000CFU/gm maxMould and Yeast100CFU/gmE.ColiNegativeSalmonellaNegative 99% resveratrol extract powder