Carbonaceous materials for the production of aluminium — Calcined coke — Determination of apparent o...
A test portion is heated in a non-oxidizing atmosphere at a fixed temperature and the loss of mass is determined. The apparent oil content is calculated in terms of loss of mass. To ensure a non-oxidizing atmosphere, some drops of toluene are added to the crucibles.
Cheese and processed cheese — Determination of total solids content (Reference method)
Specifies a method, the principle of which consists in evaporatiing the water from a test portion in the presence of sand at a temperature of 102 +/- 2 degrees centigrade in a drying oven. The content determined is expressed as a percentage by mass.
Ammonia solution for industrial use — Determination of ammonia content — Titrimetric method
A test portion is introduced into a solution of boric acid and the solution obtained is titrated with a standard volumetric solution of sulfuric acid in the presence of methyl red as indicator. The method is applicable to solutions containing not more than 35 % (m/m) of ammonia.
Liquefied anhydrous ammonia for industrial use — Determination of water content — Karl Fischer metho...
A test portion is evaporated in the presence of ethanediol and the water content of the residue is determined by the Karl Fischer method with direct electrometric measurement. The method is applicable to products having water contents equal to or greater than 50 mg/kg. For water contents greater than 1000 mg/kg it is preferable to dilute the evaporation residue with anhydrous methanol in…
Rubber — Reinforced styrene-butadiene latex — Determination of total bound styrene content
Covers two methods for latices which are reinforced with polystyrene or copolymer of butadiene and styren. The two methods, the carbon/hydrogen method and the nitration method, give comparable results although they differ in principle. Either method may be used, according to preference. A table and five figures contain more details. - Constitutes a minor revision of the first edition (ISO 4655-…
Rubber seals — Joint rings used for petroleum product supply pipes and fittings — Specification for ...
Specifies requirements, but does not apply to the mentioned product with an aromatic content higher than 30 % and liquids polluted by petroleum traces. Other requirements shall be specified in national standards. Iron, steel, copper, plastics are included as pipeline materials. Not included are joint rings made of cellular rubbers. 2 tables with general and optional requirements.
Hardmetals — Chemical analysis by flame atomic absorption spectrometry — Part 6: Determination of ch...
General requirements concerning the field of application, principle, interfering elements, apparatus, sampling and test report are given in ISO 7627-1.
Metallic coatings — Test methods for electrodeposited gold and gold alloy coatings — Part 4: Determi...
Applies to coatings for engineering, and decorative and protective purposes. Specifies general, removal of gold coating from basis metal and undercoats, fire assay, spectrophotometric and atomic absorption spectrometric methods and test report.
Plastics — Homopolymer and copolymer resins of vinyl chloride — Determination of residual vinyl chlo...
Dissolution or suspension of a test portion in a suitable solvent, for example N,N-demethylacetamide, N,N-dimethylformamide, tetrahydrofurane or dichloroethane, free of any impurity with the same chromatographic retention time as vinyl chloride under the conditions of test. Determination of the vinyl chloride monomer content by gas chromatography using the "head space" sampling method…
