Grade AZO 77USP is an extremely high purity fine particle size bright white zinc oxide produced from zinc metal following Federal Drug Administration’s Good Manufacturing Practice. AZO 77USP has been developed to meet the highest standards of chemical purity and physical quality required to meet all the requirements of THE UNITED STATES PHARMACOPOEIA. This grade can be used in pharmaceutical, cosmetic, ointment, can lacquer, and other applications requiring USP quality. It is recommended for industrial and research uses that demand the ultimate in purity and uniformity.