Pharmaceutical glass containers (vials, ampoules, cartridges) must meet USP or ISO standards for hydrolytic resistance, classified as Type I, II, or III based on glass composition and treatment. FDA reviews container specifications as part of drug product approval; importers supplying pharmaceutical manufacturers should provide certificates of conformance and test data demonstrating the applicable glass type, as these are required for drug master file submissions.

Glass color (flint/clear, amber, green) does not change the tariff classification of the container, but it is a critical commercial specification. Amber glass is required for light-sensitive products such as certain pharmaceuticals and craft beers; specifying the wrong color can render a shipment unusable for its intended filling application. Color should be explicitly stated on purchase orders and commercial invoices to avoid substitution disputes.