Glycerols for industrial use — Determination of arsenic content — Silver diethyldithiocarbamate phot...
The method is applicable tp products with a content greater than 0,1 mg/kg. It is applied to a test portion as it is, and to another identical portion with a known quantity of arsenic added. The principle consists in reduction of the arsenic by zinc in a hydrochloric acid medium, with the formation of arsine; absorption of the arsine in a solution of silver diethyldithiocarbamate in pyridine.…
Specifies the requirements and corresponding test methods. The pigments are suitable for use in paints and/or corrosion-inhibiting coatings. Three types of pigments are distinguished. In one typ only a lead content up 2 % maximum is alloqwed. Replaces ISO Recommendation R 1249-1970.
Specifies a method of determination of ash, which gives an estimation of the content of mineral salts and other inorganic matter contained in pulp. It applies to all kinds of pulp.
The Standard specifies the following characteristics of the oil. Appearance: Clear, mobile liquid. Colour: Pale yellow to orange-yellow. Odour: Characteristic with a strong note of citral. Relative density at 20/20 °C: 0,872 - 0,897. Refractive index at 20 °C: 1,4830 - 1,4890. Optical rotation at 20 °C: Range from - 3 to + 1 . Carbonyl compounds content, expressed as citral: Minimum 75 %.…
Gypsum plasters — Determination of water of crystallization content
Specifies a gravimetric method for the determination of the water of crystallization content of gypsum plasters. Describes also the principle, the apparatus, the preparation of the sample, the procedure, the expression of results, and the test report.
Includes a test procedure for products having a congealing point of 30 °C or higher and containing not more than 15 % of oil. This content may have significant effects on several of its properties, such as strength, hardness, flexibility, scuff resistance, coefficient of friction, coefficient of expansion, melting point, and oil staining.
Magnesium and magnesium alloys — Determination of aluminium — Chromazurol S photometric method
The method is applicable to the determination of an aluminium content between 0,01 and 0,20 % (m/m). This method does not apply to alloys containing zirconium and/or rare earths and/or thorium. Specifies principle, reagents, apparatus, sampling, procedure, expression of results and test report.
Specifies the requirements and corresponding test methods for all manufactured and natural pigments, including micaceous and rapid dispersion pigments. The material shall be in dry form. The pigments are classified by groups according to their colour, by categories according to their iron content, by types according to their content of water-soluble matter and their total content of water-soluble…
Whey cheese — Determination of dry matter content (Reference method)
Specifies a method, the principle of which consists in desiccating a sample of whey cheese in a well ventilated and thermostaticalle controlled drying oven at a temperature of 88 +/- 2 agree Celsius.
isoButyl methyl ketone for industrial use — List of methods of test
Specifies the sampling, the determination of distillation characteristics, of the density at 20 0C, of residue on evaporation on a water bath, of the water content, of alcoholic impurities, of the acidity to phenolphthalein and the measurement of colour.
