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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.
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 30217:1968 UNE
Estado: Vigente / 1968-11-15
Sulfato amónico técnico.
UNE 30210:1968 UNE
Análisis químico del carbonato sódico técnico.
UNE 30044:1954 UNE
Estado: Vigente / 1954-11-15
Sulfato ferroso técnico, características y ensayos.
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
Cryolite, natural and artificial -- Determination of silica content -- Reduced molybdosilicate spectrophotometric method
ISO 1693:1976 ISO
Cryolite, natural and artificial -- Determination of fluorine content -- Modified Willard-Winter method
ISO 1694:1976 ISO
Cryolite, natural and artificial -- Determination of iron content -- 1,10- Phenanthroline photometric method
ISO 3391:1976 ISO
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
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
Sodium carbonate for industrial use -- Determination of total soluble alkalinity -- Titrimetric method
ISO 746:1976 ISO
Sodium carbonate for industrial use -- Determination of matter insoluble in water at 50 degrees C
ISO 1686:1976 ISO
Sodium and potassium silicates for industrial use -- Samples and methods of test -- General
ISO 1689:1976 ISO
Sodium and potassium silicates for industrial use -- Calculation of the ratio : silicon dioxide/sodium oxide or silicon dioxide/potassium oxide
ISO 1690:1976 ISO
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
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
Sodium fluoride for industrial use -- Determination of water-insoluble matter
ISO 2832:1973 ISO
Sodium fluoride for industrial use -- Determination of moisture content
ISO 2833:1973 ISO
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
Sodium chlorate for industrial use -- Determination of matter insoluble in water
ISO 2462:1973 ISO
Sodium chlorate for industrial use -- Determination of moisture content -- Gravimetric method
ISO 2463:1973 ISO
Sodium chlorate for industrial use -- Determination of chloride content -- 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 2481:1973 ISO
Sodium chloride for industrial use -- Determination of halogens, expressed as chlorine -- Mercurimetric method
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
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
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
