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ISO 3694:1977WithdrawnAmmonium sulphate for industrial use — Determination of chloride ions content — Potentiometric methodISO 3695:1977WithdrawnAmmonium nitrate for industrial use — Determination of chloride ions content — Potentiometric methodISO 4275:1977WithdrawnAmmonium hydrogen carbonate for industrial use (including foodstuffs) — Determination of arsenic content — Silver diethyldithiocarbamate photometric methodISO 4277:1977WithdrawnCryolite, natural and artificial — Conventional test for evaluation of free fluorides contentISO 4278:1977WithdrawnSodium fluoride for industrial use — Determination of carbonate content — Gravimetric methodISO 4279:1977WithdrawnAluminium fluoride for industrial use — Determination of sodium content — Flame emission spectrophotometric methodISO 5142:1977WithdrawnSodium sulphate for industrial use — Determination of sodium sulphate content — Gravimetric methodISO 5143:1977WithdrawnSodium carbonate for industrial use — Determination of sulphur compounds content — Method by reduction and titrimetryISO 5372:1978WithdrawnCondensed phosphates for industrial use (including foodstuffs) — Determination of arsenic content — Silver diethyldithiocarbamate photometric methodISO 5373:1981WithdrawnCondensed phosphates for industrial use (including foodstuffs) — Determination of calcium content — Flame atomic absorption spectrometric methodISO 5374:1978WithdrawnCondensed phosphates for industrial use (including foodstuffs) — Determination of chloride content — Potentiometric methodISO 5375:1979WithdrawnCondensed phosphates for industrial use (including foodstuffs) — Determination of oxides of nitrogen content — 3,4- Xylenol spectrophotometric methodISO 5442:1980WithdrawnSodium hexafluorosilicate for industrial use — Determination of sulphur compounds content — Iodometric method after reductionISO 5443:1978WithdrawnSodium hexafluorosilicate for industrial use — Determination of iron content — 1,10 phenanthroline spectrophotometric methodISO 5786:1978WithdrawnAmmonium sulphate for industrial use — Determination of arsenic content — Silver diethyldithiocarbamate photometric methodISO 5791:1978WithdrawnAmmonium nitrate for industrial use — Determination of water content — Karl Fischer methodISO 5915:1980WithdrawnSodium hexafluorosilicate for industrial use — Determination of particle size distribution — Sieving methodISO 5930:1979WithdrawnCryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of phosphorus content — Reduced molybdophosphate photometric methodISO 5934:1980WithdrawnCrude sodium borates for industrial use — Determination of alkali-soluble copper and manganese contents — Zinc bis(dibenzyldithiocarbamate) and formaldehyde oxime photometric methodsISO 5935:1984WithdrawnCrude sodium borates for industrial use — Determination of total and alkali-soluble silica contents — Molybdosilicate spectrometric methodISO 5936:1980WithdrawnCrude sodium borates for industrial use — Determination of carbonate content — Gravimetric methodISO 5937:1980WithdrawnSodium perborates for industrial use — Determination of degree of attritionISO 5994:1979WithdrawnSodium sulphate for industrial use — Determination of calcium content — Flame atomic absorption spectrometric methodISO 6229:1980WithdrawnSodium hexafluorosilicate for industrial use — Determination of free silica content — Gravimetric methodISO 6918:1984WithdrawnCrude sodium borates for industrial use — Determination of total and alkali-soluble calcium and magnesium contents — Flame atomic absorption spectrometric method