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Sodium hydrogen carbonate for industrial use — Determination of iron content — 1,10- Phenanthroline photometric method
90.93 Standard confirmed
Sodium chlorate for industrial use — Determination of matter insoluble in water
90.93 Standard confirmed
Sodium chlorate for industrial use — Determination of moisture content — Gravimetric method
90.93 Standard confirmed
Sodium chlorate for industrial use — Determination of chloride content — Mercurimetric method
90.93 Standard confirmed
Sodium chloride for industrial use — Determination of matter insoluble in water or in acid and preparation of principal solutions for other determinations
90.93 Standard confirmed
Sodium chloride for industrial use — Determination of sulphate content — Barium sulphate gravimetric method
90.93 Standard confirmed
Sodium chloride for industrial use — Determination of halogens, expressed as chlorine — Mercurimetric method
90.93 Standard confirmed
Sodium chloride for industrial use — Determination of calcium and magnesium contents — EDTA complexometric methods
90.93 Standard confirmed
Sodium chloride for industrial use — Determination of the loss of mass at 110 degrees C
90.93 Standard confirmed
Cryolite, natural and artificial — Determination of aluminium content — Atomic absorption method
90.93 Standard confirmed
Sodium fluoride for industrial use — Determination of water-insoluble matter
90.93 Standard confirmed
Sodium fluoride for industrial use — Determination of moisture content
90.93 Standard confirmed
Sodium fluoride for industrial use — Determination of fluorine content — Modified Willard-Winter method
90.93 Standard confirmed
Ammonium sulphate for industrial use — Determination of iron content — 2,2'- Bipyridyl photometric method
90.93 Standard confirmed
Ammonium sulphate for industrial use — Determination of free acidity — Titrimetric method
90.93 Standard confirmed
Sodium chlorate for industrial use — Determination of chlorate content — Dichromate titrimetric method
90.93 Standard confirmed
Ammonium sulphate for industrial use — Determination of ammoniacal nitrogen content — Titrimetric method after distillation
90.93 Standard confirmed
Sodium tripolyphosphate and sodium pyrophosphate for industrial use — Determination of total phosphorus(V) oxide content — Quinoline phosphomolybdate gravimetric method
90.93 Standard confirmed