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Standard and/or project Stage TC
Withdrawal of ISO/R 977-1969
95.99 ISO/TC 47
Withdrawal of ISO/R 978-1969
95.99 ISO/TC 47
Sodium hydroxide for industrial use — Method of assay
90.93 ISO/TC 47
Sodium hydroxide for industrial use — Determination of carbonates content — Gas-volumetric method
95.99 ISO/TC 47
Sodium hydroxide for industrial use — Determination of chloride content — Mercurimetric method
90.93 ISO/TC 47
Sodium hydroxide for industrial use — Determination of sulphate content — Barium sulphate gravimetric method
95.99 ISO/TC 47
Sodium hydroxide for industrial use — Determination of iron content — 1,10- Phenanthroline photometric method
95.99 ISO/TC 47
Sodium hydroxide for industrial use — Determination of silica content — Reduced silico-molybdic complex photometric method
95.99 ISO/TC 47
Sodium hydroxide for industrial use — Determination of silica content — Gravimetric method by precipitation of quinoline molybdosilicate
95.99 ISO/TC 47
Sodium hydroxide for industrial use — Determination of calcium content — EDTA (disodium salt) complexometric method
95.99 ISO/TC 47
Withdrawal of ISO/R 987-1969
95.99 ISO/TC 47
Withdrawal of ISO/R 988-1969
95.99 ISO/TC 47
Withdrawal of ISO/R 989-1969
95.99 ISO/TC 47
Potassium hydroxide for industrial use — Method of assay
95.99 ISO/TC 47
Potassium hydroxide for industrial use — Determination of carbonates content — Gas-volumetric method
95.99 ISO/TC 47
Potassium hydroxide for industrial use — Determination of chlorides content — Mercurimetric method
95.99 ISO/TC 47
Potassium hydroxide for industrial use — Determination of sulphate content — Barium sulphate gravimetric method
95.99 ISO/TC 47
Potassium hydroxide for industrial use — Determination of iron content — 1,10- Phenanthroline photometric method
95.99 ISO/TC 47
Potassium hydroxide for industrial use — Determination of silica content — Reduced molybdosilicate photometric method
95.99 ISO/TC 47
Potassium hydroxide for industrial use — Determination of silica content — Gravimetric method by precipitation of quinoline molybdosilicate
95.99 ISO/TC 47
Potassium hydroxide for industrial use — Determination of calcium content — EDTA (disodium salt) complexometric method
95.99 ISO/TC 47
Withdrawal of ISO/R 998-1969
95.99 ISO/TC 47
Potassium hydroxide for industrial use — Determination of sodium content — Flame emission spectrophotometric method
95.99 ISO/TC 47
Withdrawal of ISO/R 1900-1971
95.99 ISO/TC 47
Potassium hydroxide for industrial use — Sampling — Test sample — Preparation of the main solution for carrying out certain determinations
90.93 ISO/TC 47
Potassium hydroxide for industrial use — Determination of carbon dioxide content — Titrimetric method
95.99 ISO/TC 47
Potassium hydroxide for industrial use — Determination of chlorides content — Photometric method
95.99 ISO/TC 47
Potassium hydroxide for industrial use — Determination of sulphur compounds — Method by reduction and titrimetry
95.99 ISO/TC 47
Sodium hydroxide for industrial use — Sampling — Test Sample — Preparation of the main solution for carrying out certain determinations
90.93 ISO/TC 47
Sodium hydroxide for industrial use — Determination of carbonates content — Titrimetric method
90.93 ISO/TC 47
Sodium hydroxide for industrial use — Determination of chlorides content — Photometric method
95.99 ISO/TC 47
Sodium hydroxide for industrial use — Determination of sulphur compounds — Method by reduction and titrimetry
95.99 ISO/TC 47
Sodium hydroxide for industrial use — Determination of calcium and magnesium contents — Flame atomic absorption method
95.99 ISO/TC 47
Potassium hydroxide for industrial use — Determination of calcium and magnesium contents — Flame atomic absorption method
95.99 ISO/TC 47
Sodium hydroxide for industrial use — Determination of mercury content — Dithizone photometric method
95.99 ISO/TC 47
Sodium hydroxide for industrial use — Determination of mercury content — Flameless atomic absorption spectrometric method
90.93 ISO/TC 47
Ammonia solution for industrial use — Determination of ammonia content — Titrimetric method
90.93 ISO/TC 47
Ammonia solution for industrial use — Determination of residue after evaporation at 105 degrees C — Gravimetric method
90.93 ISO/TC 47

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