Sulphur for industrial use — Determination of arsenic content — Silver diethyldithiocarbamate photometric method
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Phosphoric acid for industrial use (including foodstuffs) — Determination of total phosphorus (V) oxide content — Quinoline phosphomolybdate gravimetric method
Phosphoric acid for industrial use (including foodstuffs) — Determination of calcium content — Flame atomic absorption method
Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of sulphate content — Barium sulphate gravimetric method
Sodium hexafluorosilicate for industrial use — Determination of free acidity and total hexafluorosilicate content — Titrimetric method
Phosphoric acid for industrial use — Guide to sampling techniques
Condensed phosphates for industrial use (including foodstuffs) — Determination of calcium content — Flame atomic absorption spectrometric method
Sodium hexafluorosilicate for industrial use — Determination of phosphate content — Molybdovanadate spectrophotometric method
Sodium fluorosilicate for industrial use — Determination of loss in mass at 105 degrees C
Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of sulphur content — X-ray fluorescence spectrometric method
Sodium hydroxide for industrial use — Determination of mercury content — Flameless atomic absorption spectrometric method
Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of phosphorus content — Atomic absorption spectrometric method after extraction
Liquefied anhydrous ammonia for industrial use — Sampling — Taking a laboratory sample
Liquefied anhydrous ammonia for industrial use — Determination of water content — Karl Fischer method
Liquefied anhydrous ammonia for industrial use — Determination of oil content — Gravimetric and infra-red spectrometric methods
