1. Quality standard: [Ingredient]: Oleuropein[plant origin]: Olea europaea L.[Assay]: HPLC[Purity]: 90% 95% 98%[Molecule formula]: C25H32O13[Molecule weight]: 540.52[Appearance]: Light yellow to white powder.[CAS No.]: 32619-42-4[Lose in drying]: ≤5.0%[Total ash]: ≤1.0%[Heavy metal]: ≤10PPM[Arsenic salt]: ≤2PPM[Solvent residue]: ≤0.1PPM[Pesticide residue]: ≤0.1PPM[Use]: Antioxidant2. Microbiology standard:[Total bacteria]: ≤1000CFU/gm [Colibacillus]: Not Detected [Salmonella]: Not Detected [Molds and Yeasts]: ≤100CFU/gm3. Other standard[Package]: Double plastic inside, Cardboard barrel outside. 1kg/bag.[Storage]: Cool and dry.[Shelf Life]: Two years. Plant base Production 30% olive leaf extract 98% Oleuropein