The 4-1-2023 edition of 21 CFR Part 73 lists color additives exempt from certification for foods, drugs, cosmetics, and medical devices. Many sections contain direct impurity specifications for arsenic, lead, mercury, cadmium, chromium, nickel, antimony, tin, or aluminum. HMI loads direct not-more-than specifications and gap-logs cross-referenced sections whose inherited specifications are not restated in the local PDF.
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