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  • ISO 758-1976 - 中外标准 - - 1976/11 - 现行
    The principle of the specified method of reference consists in the determination of the mass of a volume of the substance at 20 °C which is contained in a pyknometer, and the determination of the capacity of pyknometer by measuring the mass of an adequate volume of water at 20 °C. Calculation of the density by division of the mass of substance by the capacity of pyknometer. - Replaces ISO Recommendation R 758-1968.
    化学制品连接液体化合物比重瓶测量分析法密度(质量/体积)测量物理试验密度测量ChemicalsConnectionsDensity measurementLiquidsMeasurementPhysical testing
  • ISO 802-1976 - 中外标准 - - 1976/9 - 现行
    Specifies the preparation of laboratory samples, crude samples for the determination of certain geometric properties and physical and pysico-chemical tests including the determination of moisture content and dried samples. The principle consists in grinding and sieving of the sample until passing completely through a sieve of meshes having apertures of 0,2 mm. Mixing and drying at about 300 °C. Replaces ISO Recommendation R 802-1968.
    试样准备氧化铝试验样本储存AluminiumAluminium oxidePreparationSamplesStorageTest specimensTestingTests
  • ISO 804-1976 - 中外标准 - - 1976/9 - 现行
    The procedure for the preparation of a principal solution for chemical analysis requires at first an alkaline fusion of the test portion, either with a mixture of sodium carbonate and boric acid or with a mixture of sodium carbonate and sodium tetraborate. Subsequent dissolution of the molten mass in an excess of nitric acid and adjustment of an appropriate aliquot portion to pH 2. Replaces ISO Recommendation R804/1968.
    化学分析和试验试样化学分析氧化铝可溶物质样本试样制备Aluminium oxideChemical analysis and testingSamplesSpecimen preparationTest specimens
  • ISO 3165-1976 - 中外标准 - - 1976/6 - 现行
    Gives general recommendations applicable to all operations whatever the nature of the material being sampled is. Relates to safe access to and from the place where the sample is taken from and a safe working place with adequate safety regulations. Contains specific recommendations for hazardous products. The physical and chemical properties may be such that they can have a direct physiological effect or that fire or explosion risks are present during handling. A general classification of risks is listed.
    安全工程化学制品抽样方法化合物化学危害化学抽样安全连接Chemical hazardsChemicalsChemistryConnectionsSafetySafety engineeringSamplingSampling methods
  • ISO 1552-1976 - 中外标准 - - 1976/4 - 现行
    The method is applicable when an agreement has previously been reached between the interested parties for the removal of two representative samples during filling of the tank-wagon at the manufacturer''s premises. It cannot be applied when it is intended to determine the water content. The principle consists in checking that the equipment used is gas-tight; collection of the samples in steel bottles. One bottle is intended for the customer and the other is retained by the manufacturer in case an analysis is required for checking purposes. - Replaces ISO Recommendation R 1552-1970.
    液化气抽样含量测定抽样方法容量分析ChlorineDetermination of contentLiquefied gasesSamplingSampling methodsVolumetric analysis
  • ISO 3139-1976 - 中外标准 - - 1976/4 - 现行
    Contains also titrimetric methods for determination of the total acidity, the hexafluorosilicic acid content and the non-volatile acids content and a method for calculating the hydrogen fluoric content. Specifies the scope and the field of application of these methods and declares the principle of the procedures. This second edition results from the incorporation of Addendum in the first one. Cancels and replaces the first edition ISO 3139/1974.
    氢氟酸杂质化学分析和试验抽样方法含量测定取样AcidsChemical analysis and testingDetermination of contentHydrofluoric acidImpuritiesSamplingSampling methods
  • ISO 3428-1976 - 中外标准 - - 1976/4 - 现行
    Relates to crude samples intended for the determination of moisture content and dried samples for chemical tests. Processing by grinding and sieving until the sample passes completely through a sieve of mesh aperture 0.125 mm. Thoroughly mixing and drying and storing in a tightly closed container.
    试验试样氟化钠试样制备储存氟化物FluoridesSodiumSpecimen preparationStorageTest specimensTestingTests
  • ISO 3427-1976 - 中外标准 - - 1976/4 - 现行
    Applicable for sampling from containers (cylinders, drums, tanks, etc.). Sampling of the product in a steel cylinder, previously cleaned, dried and evacuated. The stainless steel cylinder shall be capable of withstanding an internal pressure of at least 3 MPa (30 bar). The cylinder is filled to the filling ratio allowed by the safety considerations. Details are given in the relevant international standards for the products considered. The samples shall be taken only from the liquefied phase. A diagram of the sampling assembly is shown in a figure.
    抽样方法卤代烃液化气试样制备抽样试验卤化烃Halogenated hydrocarbonsLiquefied gasesSamplingSampling methodsSpecimen preparationTestingTests
  • ISO 739-1976 - 中外标准 - - 1976/2 - 废止
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