Glycerols for industrial use — Determination of water content — Karl Fisher method
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Glycerols for industrial use — Determination of ash — Gravimetric method
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Glycerols for industrial use — Determination of arsenic content — Silver diethyldithiocarbamate photometric method
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Sodium hydroxide for industrial use — Method of assay
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Sodium hydroxide for industrial use — Determination of carbonates content — Gas-volumetric method
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Sodium hydroxide for industrial use — Determination of chloride content — Mercurimetric method
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Sodium hydroxide for industrial use — Determinatio of sulphate content — Barium sulphate gravimetric method
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Sodium hydroxide for industrial use — Determination of iron content — 1,10-Phenanthroline photometric method
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Sodium hydroxide for industrial use — Determination of silica content — Reduced silico-molybdic complex photometric method
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Sodium hydroxide for industrial use — Determination of silica content — Gravimetric method by precipitation of quinoline molybdosilicate
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