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ISO 25095-1:2026PublishedPropylene oxide for industrial use — Part 1: Determination of purity and trace impurities by gas chromatographyInternational Standard · Published 17 Mar 2026 · ISO/TC 47ISO 25095-2:2026PublishedPropylene oxide for industrial use — Part 2: Determination of aldehydes by liquid chromatographyInternational Standard · Published 17 Mar 2026 · ISO/TC 47