we offer Ginkgo biloba extract as follows: Product name: Ginkgo Biloba Extract Appearance:Brown-Yellow powder Assay(by HPLC):Ginkgo flavone glycosidesâ¥*4% Total terpene lactonesâ¥6% Ash:â¤5.0% Mesh Size: *0 mesh Loss On Dry:â¤5.0 Heavy metals:â¤*0ppm Pb:â¤2ppm As:â¤2ppm Hg:â¤0.*5ppm Cd:None Detection Residue on Ignition:E.P. Residue of pesticide:None Detection Total Plate Count:â¤***0cfu/g Yeast