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ISO 2832:1973 Sodium fluoride for industrial use — Determination of moisture content
ISO 2927:1973 Aluminium oxide primarily used for the production of aluminium — Sampling
ISO 2865:1973 Aluminium oxide primarily used for the production of aluminium — Determination of boron content — Curcumin spectrophotometric method
ISO 2828:1973 Aluminium oxide primarily used for the production of aluminium — Determination of fluorine content — Alizarin complexone and lanthanum chloride spectrophotometric method
ISO 2829:1973 Aluminium oxide primarily used for the production of aluminium — Determination of phosphorus content — Reduced phosphomolybdate spectrophotometric method
ISO 2868:1973 Surface active agents — Detergents — Anionic-active matter stable to acid hydrolysis — Determination of trace amounts
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