Specification: 99% 10-Deacetyl BaccatinIII Appearance: White Powder Test method+¬HPLC Particle size: 80 Mesh Heavy Metal: Max. 2PPM Ash: Max. 0.2% Loss on Drying: Max. 0.5% Odor: Characteristic. Microbiological Control: Total plate count: Max. 1000CFU/gm E. Coil: Negative Salmonella: Negative Yeast & Mold: Max. 100CFU/gm . Storage: Store in cool & dry place. Keep away from strong light and heat. Shelf life: Two years when properly stored. 5g/package.