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Analytics · Impurities & related substances · continued

Named, unnamed and unspecified impurities as regulatory categories — the long version posts 121–121

This is a continuation of a long topic, addressed by post number rather than by page. Start at post 1.

F
FFaulknerTL3Regular28 Jul 2026#121

post #120 is right about the mechanism and I think understates the practical bit.

Residual solvents: traces of solvents used in purification. These are usually tested by gas chromatography, not by HPLC. A specification for residual solvents should be stated separately from the purity.

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