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Número de resultados: 161

UNE-EN 12174:2013  UNE

Estado: Vigente / 2013-11-13

Productos químicos utilizados en el tratamiento del agua destinada al consumo humano. Hexafluorosilicato de sodio.

CTN 77/SC 1 AGUA

UNE-EN 12125:2013  UNE

Estado: Vigente / 2013-07-31

Productos químicos utilizados en el tratamiento del agua destinada al consumo humano. Tiosulfato de sodio.

CTN 77/SC 1 AGUA

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.

CTN 30 INDUSTRIA QUÍMICA INORGÁNICA

UNE 30217:1968  UNE

Estado: Vigente / 1968-11-15

Sulfato amónico técnico.

CTN 30 INDUSTRIA QUÍMICA INORGÁNICA

UNE 30210:1968  UNE

Estado: Vigente / 1968-11-15

Análisis químico del carbonato sódico técnico.

CTN 30 INDUSTRIA QUÍMICA INORGÁNICA

UNE 30044:1954  UNE

Estado: Vigente / 1954-11-15

Sulfato ferroso técnico, características y ensayos.

CTN 30 INDUSTRIA QUÍMICA INORGÁNICA

ISO 2482:1973  ISO

Estado: Vigente / 1973-02-01

Sodium chloride for industrial use -- Determination of calcium and magnesium contents -- EDTA complexometric methods

ISO/TR 4277:2009  ISO

Estado: Vigente / 2009-10-21

Cryolite, natural and artificial -- Conventional test for evaluation of free fluorides content

ISO 6374:1981  ISO

Estado: Vigente / 1981-10-01

Cryolite, natural and artificial, and aluminium fluoride for industrial use -- Determination of phosphorus content -- Atomic absorption spectrometric method after extraction

ISO 5938:1979  ISO

Estado: Vigente / 1979-07-01

Cryolite, natural and artificial, and aluminium fluoride for industrial use -- Determination of sulphur content -- X-ray fluorescence spectrometric method

ISO 5444:1978  ISO

Estado: Vigente / 1978-11-01

Sodium fluorosilicate for industrial use -- Determination of loss in mass at 105 degrees C

ISO 5440:1978  ISO

Estado: Vigente / 1978-10-01

Sodium hexafluorosilicate for industrial use -- Determination of phosphate content -- Molybdovanadate spectrophotometric method

ISO 4280:1977  ISO

Estado: Vigente / 1977-11-01

Cryolite, natural and artificial, and aluminium fluoride for industrial use -- Determination of sulphate content -- Barium sulphate gravimetric method

ISO 4281:1977  ISO

Estado: Vigente / 1977-03-01

Sodium hexafluorosilicate for industrial use -- Determination of free acidity and total hexafluorosilicate content -- Titrimetric method

ISO 1619:1976  ISO

Estado: Vigente / 1976-09-01

Cryolite, natural and artificial -- Preparation and storage of test samples

ISO 1620:1976  ISO

Estado: Vigente / 1976-09-01

Cryolite, natural and artificial -- Determination of silica content -- Reduced molybdosilicate spectrophotometric method

ISO 1693:1976  ISO

Estado: Vigente / 1976-09-01

Cryolite, natural and artificial -- Determination of fluorine content -- Modified Willard-Winter method

ISO 1694:1976  ISO

Estado: Vigente / 1976-09-01

Cryolite, natural and artificial -- Determination of iron content -- 1,10- Phenanthroline photometric method

ISO 3391:1976  ISO

Estado: Vigente / 1976-09-01

Cryolite, natural and artificial -- Determination of calcium content -- Flame atomic absorption method

ISO 3393:1976  ISO

Estado: Vigente / 1976-08-01

Cryolite, natural and artificial, and aluminium fluoride for industrial use -- Determination of moisture content -- Gravimetric method

ISO 1691:1976  ISO

Estado: Vigente / 1976-07-01

Sodium and potassium silicates for industrial use -- Determination of carbonates content -- Gas-volumetric method

ISO 1692:1976  ISO

Estado: Vigente / 1976-04-01

Sodium and potassium silicates for industrial use -- Determination of total alkalinity -- Titrimetric method

ISO 3428:1976  ISO

Estado: Vigente / 1976-04-01

Sodium fluoride for industrial use -- Preparation and storage of test samples

ISO 739:1976  ISO

Estado: Vigente / 1976-02-01

Sodium carbonate for industrial use -- Preparation and storage of test samples

ISO 740:1976  ISO

Estado: Vigente / 1976-02-01

Sodium carbonate for industrial use -- Determination of total soluble alkalinity -- Titrimetric method

ISO 746:1976  ISO

Estado: Vigente / 1976-02-01

Sodium carbonate for industrial use -- Determination of matter insoluble in water at 50 degrees C

ISO 1686:1976  ISO

Estado: Vigente / 1976-02-01

Sodium and potassium silicates for industrial use -- Samples and methods of test -- General

ISO 1689:1976  ISO

Estado: Vigente / 1976-02-01

Sodium and potassium silicates for industrial use -- Calculation of the ratio : silicon dioxide/sodium oxide or silicon dioxide/potassium oxide

ISO 1690:1976  ISO

Estado: Vigente / 1976-02-01

Sodium and potassium silicates for industrial use -- Determination of silica content -- Gravimetric method by insolubilization

ISO 3357:1975  ISO

Estado: Vigente / 1975-09-01

Sodium tripolyphosphate and sodium pyrophosphate for industrial use -- Determination of total phosphorus(V) oxide content -- Quinoline phosphomolybdate gravimetric method

ISO 3332:1975  ISO

Estado: Vigente / 1975-07-01

Ammonium sulphate for industrial use -- Determination of ammoniacal nitrogen content -- Titrimetric method after distillation

ISO 3199:1975  ISO

Estado: Vigente / 1975-02-01

Sodium chlorate for industrial use -- Determination of chlorate content -- Dichromate titrimetric method

ISO 2366:1974  ISO

Estado: Vigente / 1974-11-01

Cryolite, natural and artificial -- Determination of sodium content -- Flame emission and atomic absorption spectrophotometric methods

ISO 2992:1974  ISO

Estado: Vigente / 1974-04-01

Ammonium sulphate for industrial use -- Determination of iron content -- 2,2'- Bipyridyl photometric method

ISO 2993:1974  ISO

Estado: Vigente / 1974-04-01

Ammonium sulphate for industrial use -- Determination of free acidity -- Titrimetric method

ISO 2830:1973  ISO

Estado: Vigente / 1973-12-01

Cryolite, natural and artificial -- Determination of aluminium content -- Atomic absorption method

ISO 2831:1973  ISO

Estado: Vigente / 1973-12-01

Sodium fluoride for industrial use -- Determination of water-insoluble matter

ISO 2832:1973  ISO

Estado: Vigente / 1973-12-01

Sodium fluoride for industrial use -- Determination of moisture content

ISO 2833:1973  ISO

Estado: Vigente / 1973-12-01

Sodium fluoride for industrial use -- Determination of fluorine content -- Modified Willard-Winter method

ISO 2460:1973  ISO

Estado: Vigente / 1973-04-01

Sodium hydrogen carbonate for industrial use -- Determination of iron content -- 1,10- Phenanthroline photometric method

ISO 2461:1973  ISO

Estado: Vigente / 1973-04-01

Sodium chlorate for industrial use -- Determination of matter insoluble in water

ISO 2462:1973  ISO

Estado: Vigente / 1973-04-01

Sodium chlorate for industrial use -- Determination of moisture content -- Gravimetric method

ISO 2463:1973  ISO

Estado: Vigente / 1973-04-01

Sodium chlorate for industrial use -- Determination of chloride content -- Mercurimetric method

ISO 2481:1973  ISO

Estado: Vigente / 1973-01-01

Sodium chloride for industrial use -- Determination of halogens, expressed as chlorine -- Mercurimetric method

ISO 2483:1973  ISO

Estado: Vigente / 1973-01-01

Sodium chloride for industrial use -- Determination of the loss of mass at 110 degrees C

ISO 2367:1972  ISO

Estado: Vigente / 1972-12-01

Cryolite (natural and artificial) -- Determination of aluminium content -- 8- Hydroxyquinoline gravimetric method

ISO 2479:1972  ISO

Estado: Vigente / 1972-12-01

Sodium chloride for industrial use -- Determination of matter insoluble in water or in acid and preparation of principal solutions for other determinations

ISO 2480:1972  ISO

Estado: Vigente / 1972-12-01

Sodium chloride for industrial use -- Determination of sulphate content -- Barium sulphate gravimetric method

ISO 2122:1972  ISO

Estado: Vigente / 1972-06-01

Sodium and potassium silicates for industrial use -- Preparation of solution of products not easily soluble in boiling water and determination of matter insoluble in water

Número de resultados: 161

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