Steel and iron — Determination of vanadium content — Flame atomic absorption spectrometric method
The method is applicable to vandadium contents between 0,005 % (m/m) and 1,0 % (m/m), provided that the tungsten content in the test portion is not higher than 10 mg and/or the titanium content is not higher than 5 mg. Specifies principle, reagents, apparatus, sampling, procedure, expression of results and test report. The annexes give additional information on the international co-operative…
Surface active agents — Soaps — Determination of low contents of free glycerol by molecular absorpti...
The determination is carried out in the following way: Decomposition of the soap by sulfuric acid and extraction of the fatty acida with light petroleum. Oxidation of the free glycerol remaining in the aqueous phase by periodic acid to formic acid and formaldehyde. On reaction with chromotropic acid, the aldehyde formed gives an absorbing compound whose absorbance is propotional to the free…
Surface active agents and soaps — Determination of water content — Azeotropic distillation method
The water in a test portion is removed by azeotropic destillation with boiling xylene or petroleum. The volume of the water collected is measured. The method is applicable to products in the form of powders having water contents greater than 5 % (m/m), and in the form of pastes ans solutions. It is not applicable to samples containing water-soluble volatile compounds, for example ethanol.
Natural gas — Determination of sulfur compounds — Part 5: Lingener combustion method
Specifies a method for the determination of total sulphur in natural gas. It is applicable to gases with sulphur contents between 0,5 mg/m3 and 1 000 mg/m3. With a total sulphur content of more than 0,1 mg sulphur in the absorption solution, visual titration with an indicator can be chosen, whereas for lower contents turbidimetric titration is preferable.
Manganese ores — Determination of moisture content
The method is intended to be applied at the places of dispatch and/or acceptance of the ore. Annex A specifies a method to be used in the case of adhesive or wet manganese ores. Annex B specifies methods of correction for sprinkled water and/or rain-water. Cancels and replaces the first edition (ISO 4299:1980) of which it constitutes a minor revision.
Child-resistant packaging — Requirements and testing procedures for reclosable packages
Acceptance criteria are given for the package when tested by specified methods. These methods not only provide a measure of the effectiveness of the package in restricting access by children but also cover the accessibility to the contents by adults. Reclosable packages for any product intended to be exposed or removed from the packages are covered by the procedures. Means of performing the test…
Sweetened condensed milk — Determination of total solids content (Reference method)
The method consists in pre-drying of a test portion on a boiling water-bath and subsequent evaporation of the remaining water in the presence of sand at a temperature of 102+2 °C in a drying oven.
Milk, cream and evaporated milk — Determination of total solids content (Reference method)
The method consists in pre-drying of a test portion on a boiling water-bath and subsequent evaporation of the remaining water in a drying oven at a temperature of 102+2 °C.
Safety of hand-held motor-operated electric tools. Part 2: Particular requirements for hammers
Applies to spray guns used for spraying nonflammable liquids which incorporate the motor in the hand-held unit.
The contents of the corrigendum of December 1989 have been included in this copy.
Textile Test Methods Quantitative Analysis of Fibre Mixtures - Binary
Mixtures Containing Polyvin...
Describes a procedure for the quantitative analysis of binary
mixtures of polyvinyl chloride fibres (whether after-chlorinated
or not) with regenerated cellulose fibres (regular, high-tenacity
and high-wet-modulus viscose) nylon, polyester or acrylic fibre,
by removal of the polyvinyl chloride component.
