Specification: EP4, USP28 1% Food Grade 2% Feed Grade Specification: EP4 Appearance: A white or off-white crystalline powder Identification: Positive Specific rotation: +89~+93 Appearance of solution: Clear and colourless Heavy metal: not more than 10ppm Loss on drying: Not more than 1.0% Related substance: Meet the requirements Assay: 98.5%~101.0% Origin China Package Weight 1 null