... with pH value between 4 to 6.5 and positive ninhydrin reaction. Specifications: ItemsRequirementAppearancePale yellow or brown powder, special ... (i.e., Amino Acid oral liquid, amino acid soluble granule, amino acid capsule, fruity amino acid beverage, and concentrated beverage, special work ... as basic raw materials for separating and purifying many types of single amino acid.Packing & storage: In 20 kg ...