Hardmetals — Chemical analysis by flame atomic absorption spectrometry — Part 1: General requirement...
Subsequent parts of ISO 7627 specify methods for determination of the content of a number of elements (see the table). The method is applicable to cabides of chromium, niobium, tantalum, titanium, tungsten, vanadium, mixtures of these carbides and binder metals, all grades of presintered or sintered hardmetals, produced from these cabides, and coated hardmetals, after total removal of coating,…
Hardmetals — Chemical analysis by flame atomic absorption spectrometry — Part 2: Determination of ca...
General requirements concerning the field of application, principle, interfering elements,aparatus, sampling and test report are given in ISO 7627-1. In low concentrations the determination of these elements is very critical.
Hardmetals — Chemical analysis by flame atomic absorption spectrometry — Part 5: Determination of co...
General requirements concerning the field of application, principle, interfering elements, apparatus, sampling and test report are given in ISO 7627-1.Determination of element contents in high concentration by the atomic absorption spectrophotometry method yields a wider scattering of results than are obtainable by other methods.
Caseins and caseinates — Determination of scorched particles content
Specifies a method on the principle of dissolution of a test portion in hot sodium carbonate, sodium polyphosphate or disodium ethylenediaminetetraacetate solution, or in sodium hydroxide solution at room temperature or at 60 degrees centigrade, filtration of the solution through a filtering disk and visual comparison of dried disk with scorched particle standard disks. The testing of filtering…
Adhesives with solvents for assembly of PVC-U pipe elements — Characterization — Part 1: Basic test ...
Specification of three basic test methods, which are essential in deciding the uniformity of an adhesive: Viscosity (dynamic and Brookfield viscosity), conventional dry matter content and ash content.
Manganese ores and concentrates — Determination of aluminium, copper, lead and zinc contents — Flame...
The method is applicable to a concentration range of 0,1 to 4,0 % (m/m) of aluminium, 0,005 to 1,0 % (m/m) of copper, 0,005 to 1,0 % (m/m) of lead and 0,005 to 0,25 (m/m) of zinc. ISO 5889 should be read in conjunction with ISO 4297. Specifies principle, reagents, apparatus, sampling, procedure and expression of results.
Starches and derived products — Determination of sulfur dioxide content — Acidimetric method and nep...
Entrainment in a current of nitrogen of the gas extracted from the acidified and heated product, and fixing and oxidation of the gas by bubbling through a dilute solution of neutral hydrogen peroxid. Titration of the sulphuric acid formed with standard volumetric sodium hydroxide solution of nephelometric determination in the case of low contents.
