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Número de resultados: 160
UNE-EN 12125:2022 UNE
Estado: Vigente / 2022-12-21
Productos químicos utilizados en el tratamiento del agua destinada al consumo humano. Tiosulfato de sodio.
CTN 77/SC 1 Agua
UNE-EN 12174:2013 UNE
Estado: Anulada / 2022-12-21
Productos químicos utilizados en el tratamiento del agua destinada al consumo humano. Hexafluorosilicato de sodio.
UNE-EN 12125:2013 UNE
UNE-EN 12174:2007 UNE
Estado: Anulada / 2013-11-13
UNE-EN 12125:2006 UNE
Estado: Anulada / 2013-07-31
Productos químicos utilizados en el tratamiento del agua destinada al consumo humano. Tiosulfato de sodio
UNE-EN 1421:2006 UNE
Estado: Anulada / 2013-06-26
Productos químicos utilizados en el tratamiento de agua destinada al consumo humano. Cloruro de amonio.
UNE-EN 12125:1999 UNE
Estado: Anulada / 2006-03-29
UNE-EN 1421:1996 UNE
Estado: Anulada / 2006-03-22
Sustancias químicas utilizadas en el tratamiento de agua destinada a consumo humano. Cloruro de amonio.
UNE 30219:1978 UNE
Estado: Vigente / 1978-01-15
Nitrato amónico para uso industrial. Determinación de la acidez libre. Método volumétrico.
CTN 30 Industria química inorgánica
UNE 30218:1976 UNE
Estado: Vigente / 1976-10-15
Nitrato amónico para uso industrial. Determinacional del pH. Método potenciométrico.
UNE 30210:1968 UNE
Estado: Vigente / 1968-11-15
Análisis químico del carbonato sódico técnico.
UNE 30217:1968 UNE
Sulfato amónico técnico.
UNE 30044:1954 UNE
Estado: Vigente / 1954-11-15
Sulfato ferroso técnico, características y ensayos.
ISO/TR 4277:2009 ISO
Estado: Published / 2009-10-21
Cryolite, natural and artificial — Conventional test for evaluation of free fluorides content
ISO 20292:2009 ISO
Estado: Published / 2009-04-29
Materials for the production of primary aluminium — Dense refractory bricks — Determination of cryolite resistance
ISO 7110:1985 ISO
Estado: Withdrawn / 1985-07-18
Ammonium bicarbonate (Ammonium hydrogen- carbonate) for industrial use (including foodstuffs) — Determination of lead content — Flame atomic absorption method
ISO 6918:1984 ISO
Estado: Withdrawn / 1984-11-01
Crude sodium borates for industrial use — Determination of total and alkali-soluble calcium and magnesium contents — Flame atomic absorption spectrometric method
ISO 6920:1984 ISO
Crude sodium borates for industrial use — Determination of total and alkali-soluble calcium and magnesium contents — Titrimetric method
ISO 5935:1984 ISO
Estado: Withdrawn / 1984-06-01
Crude sodium borates for industrial use — Determination of total and alkali-soluble silica contents — Molybdosilicate spectrometric method
ISO 5373:1981 ISO
Estado: Withdrawn / 1981-11-01
Condensed phosphates for industrial use (including foodstuffs) — Determination of calcium content — Flame atomic absorption spectrometric method
ISO 6374:1981 ISO
Estado: Published / 1981-10-01
Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of phosphorus content — Atomic absorption spectrometric method after extraction
ISO 5936:1980 ISO
Estado: Withdrawn / 1980-11-01
Crude sodium borates for industrial use — Determination of carbonate content — Gravimetric method
ISO 5937:1980 ISO
Sodium perborates for industrial use — Determination of degree of attrition
ISO 5934:1980 ISO
Crude sodium borates for industrial use — Determination of alkali-soluble copper and manganese contents — Zinc bis(dibenzyldithiocarbamate) and formaldehyde oxime photometric methods
ISO 5442:1980 ISO
Estado: Withdrawn / 1980-10-01
Sodium hexafluorosilicate for industrial use — Determination of sulphur compounds content — Iodometric method after reduction
ISO 5915:1980 ISO
Estado: Withdrawn / 1980-08-01
Sodium hexafluorosilicate for industrial use — Determination of particle size distribution — Sieving method
ISO 6229:1980 ISO
Estado: Withdrawn / 1980-07-01
Sodium hexafluorosilicate for industrial use — Determination of free silica content — Gravimetric method
ISO 5994:1979 ISO
Estado: Withdrawn / 1979-09-01
Sodium sulphate for industrial use — Determination of calcium content — Flame atomic absorption spectrometric method
ISO 5938:1979 ISO
Estado: Published / 1979-07-01
Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of sulphur content — X-ray fluorescence spectrometric method
ISO 5930:1979 ISO
Estado: Withdrawn / 1979-07-01
Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of phosphorus content — Reduced molybdophosphate photometric method
ISO 3358:1979 ISO
Estado: Withdrawn / 1979-05-01
Sodium tripolyphosphate and sodium pyrophosphate for industrial use — Separation by column chromatography and determination of the different phosphate forms
ISO 5375:1979 ISO
Estado: Withdrawn / 1979-02-01
Condensed phosphates for industrial use (including foodstuffs) — Determination of oxides of nitrogen content — 3,4- Xylenol spectrophotometric method
ISO 5374:1978 ISO
Estado: Withdrawn / 1978-12-01
Condensed phosphates for industrial use (including foodstuffs) — Determination of chloride content — Potentiometric method
ISO 5791:1978 ISO
Estado: Withdrawn / 1978-11-01
Ammonium nitrate for industrial use — Determination of water content — Karl Fischer method
ISO 5443:1978 ISO
Sodium hexafluorosilicate for industrial use — Determination of iron content — 1,10 phenanthroline spectrophotometric method
ISO 5444:1978 ISO
Estado: Published / 1978-11-01
Sodium fluorosilicate for industrial use — Determination of loss in mass at 105 degrees C
ISO 5440:1978 ISO
Estado: Published / 1978-10-01
Sodium hexafluorosilicate for industrial use — Determination of phosphate content — Molybdovanadate spectrophotometric method
ISO 5786:1978 ISO
Estado: Withdrawn / 1978-08-01
Ammonium sulphate for industrial use — Determination of arsenic content — Silver diethyldithiocarbamate photometric method
ISO 5372:1978 ISO
Condensed phosphates for industrial use (including foodstuffs) — Determination of arsenic content — Silver diethyldithiocarbamate photometric method
ISO 3695:1977 ISO
Estado: Withdrawn / 1977-12-01
Ammonium nitrate for industrial use — Determination of chloride ions content — Potentiometric method
ISO 3694:1977 ISO
Ammonium sulphate for industrial use — Determination of chloride ions content — Potentiometric method
ISO 5142:1977 ISO
Sodium sulphate for industrial use — Determination of sodium sulphate content — Gravimetric method
ISO 4277:1977 ISO
Estado: Withdrawn / 1977-11-01
ISO 4275:1977 ISO
Ammonium hydrogen carbonate for industrial use (including foodstuffs) — Determination of arsenic content — Silver diethyldithiocarbamate photometric method
ISO 4278:1977 ISO
Sodium fluoride for industrial use — Determination of carbonate content — Gravimetric method
ISO 4279:1977 ISO
Aluminium fluoride for industrial use — Determination of sodium content — Flame emission spectrophotometric method
ISO 4280:1977 ISO
Estado: Published / 1977-11-01
Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of sulphate content — Barium sulphate gravimetric method
ISO 5143:1977 ISO
Sodium carbonate for industrial use — Determination of sulphur compounds content — Method by reduction and titrimetry
ISO 4281:1977 ISO
Estado: Published / 1977-03-01
Sodium hexafluorosilicate for industrial use — Determination of free acidity and total hexafluorosilicate content — Titrimetric method
ISO 850:1976 ISO
Estado: Withdrawn / 1976-11-01
Sodium tripolyphosphate for industrial use — Determination of matter insoluble in water
