This method gives three procedures for the analytical
determination of the amount of metallic copper present in textile
materials. The choice of method will depend on the content of
copper in the sample, the quantity of sample available, and the
other materials present in the sample.
Plastics — Melamine-formaldehyde mouldings — Determination of extractable formaldehyde
Liquids simulating fodd and beverages are placed in contact with mouldings of the sample material, under defined conditions. The formaldehyde content of the liquid is then determined and the quantity of formaldehyde extracted per unit area of content is calculated. Two spectrophotometric methods for the determination of formaldehyde in the liquid, using chromotropic acid disodium salt or…
Higher alcohols for industrial use — Methods of test — Part 5: Determination of total alcohols conte...
Relates to C6 to C13 alcohols. The principle based on esterification of alcohols present in a test portion by means of acetic anhydride, and titration of the excess acetic anhydride with a standard volumetric ethanolic potassium hydroxide solution, in the precence of phenolphtalein as indicator.
Maleic anhydride for industrial use — Methods of test — Part 4: Determination of maleic anhydride co...
The principle consists in the dissolution of a test portion in diluted standard volumetric sodium hydroxide solution and titration with standard volumetric sodium hydroxide solution in presence of phenolphthalein as indicator. - ISO 1390, Parts 1 to 6, replace ISO Recommendation R 1390-1970.
Maleic anhydride for industrial use — Methods of test — Part 6: Determination of iron content — 2,2&...
The principle is based on the dissolution, in hot hydrochloric acid, of the residue from the determination of the ash of a test portion (see ISO 1390/5). Reduction, by hydroxylammonium chloride, of the iron(III) contained in the solution thus obtained, formation of the coloured complex iron(II)-2,2'bipyridyl in a buffered medium. Photometric measurement of the coloured complex at a…
Aluminium and aluminium alloys — Determination of nickel — Spectrophotometric method using dimethylg...
The method is applicable to nickel contents between 0,001 and 3 % (m/m). Specifies principle, reagents, apparatus, sampling, procedure, expression of results and test report.
Higher alcohols for industrial use — Methods of test — Part 1: General
Gives general instructions for C6 to C13 alcohols and also specifies the methods to be used for the measurement of the colour, the determination of the density at 20 °C and the determination of the water content.
Higher alcohols for industrial use — Methods of test — Part 3: Determination of carbonyl compounds c...
Relates to C6 to C13 alcohols. The principle bases on reaction of carbonyl compounds present in a test portion with hydroxylammonium chloride to from an oxime, and potentiometric titration of the hydrochloric acid liberated with standard volumetric ethanolic potassium hydroxide solution.
Gas cylinders for medical use — Marking for identification of content
Cancels and replaces ISO recommendation R 32-1957, and its amendment 1-1966. Establishes a system of marking and a series of colours for the identification of the content of gas cylinders. In the case of gas mixtures, the cylinder shall bear the appropriate colours for the gases comprising the mixture, such colours to be visible from the valve end.
