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ISO/R 998:1969WithdrawnWithdrawal of ISO/R 998-1969Recommendation · Published 1 Feb 1969 · ISO/TC 47ISO 1550:1973WithdrawnPotassium hydroxide for industrial use — Determination of sodium content — Flame emission spectrophotometric methodInternational Standard · Published 1 Dec 1973 · ISO/TC 47ISO/R 1900:1971WithdrawnWithdrawal of ISO/R 1900-1971Recommendation · Published 1 May 1971 · ISO/TC 47ISO 2466:1973WithdrawnPotassium hydroxide for industrial use — Sampling — Test sample — Preparation of the main solution for carrying out certain determinationsInternational Standard · Published 1 Apr 1973 · ISO/TC 47ISO 2900:1973WithdrawnPotassium hydroxide for industrial use — Determination of carbon dioxide content — Titrimetric methodInternational Standard · Published 1 Aug 1973 · ISO/TC 47ISO 3177:1975WithdrawnPotassium hydroxide for industrial use — Determination of chlorides content — Photometric methodInternational Standard · Published 1 Mar 1975 · ISO/TC 47ISO 3194:1975WithdrawnPotassium hydroxide for industrial use — Determination of sulphur compounds — Method by reduction and titrimetryInternational Standard · Published 1 Aug 1975 · ISO/TC 47ISO 3195:1975WithdrawnSodium hydroxide for industrial use — Sampling — Test Sample — Preparation of the main solution for carrying out certain determinationsInternational Standard · Published 1 Mar 1975 · ISO/TC 47ISO 3197:1975WithdrawnSodium hydroxide for industrial use — Determination of chlorides content — Photometric methodInternational Standard · Published 1 Mar 1975 · ISO/TC 47ISO 3198:1975WithdrawnSodium hydroxide for industrial use — Determination of sulphur compounds — Method by reduction and titrimetryInternational Standard · Published 1 Aug 1975 · ISO/TC 47ISO 3697:1976WithdrawnSodium hydroxide for industrial use — Determination of calcium and magnesium contents — Flame atomic absorption methodInternational Standard · Published 1 Nov 1976 · ISO/TC 47ISO 3698:1976WithdrawnPotassium hydroxide for industrial use — Determination of calcium and magnesium contents — Flame atomic absorption methodInternational Standard · Published 1 Dec 1976 · ISO/TC 47ISO 5992:1979WithdrawnSodium hydroxide for industrial use — Determination of mercury content — Dithizone photometric methodInternational Standard · Published 1 Sep 1979 · ISO/TC 47