Éléments standard pour la construction des machines-outils — Bâtis latéraux pour montants
La présente Norme Internationale fixe certaines dimensions relatives à l'interchangeabilité des bâtis latéraux pour montants, utilisés pour la construction des machines spéciales à partir d'éléments standard.
Paints and varnishes — Comparison of contrast ratio (hiding power) of paints of the same type and co...
Specifies the standard method to be used in comparing the contrast ratios given by paint films of white or ligth colours, of refelctance factor greater than 40 %, dried at normal air temperature and applied at approximately equal wet film thickness to black and white substrates. The wet film thickness selected, approximately 50 um, corresponds to a spreading rate of approximately 20 m2/l. Because…
Definitions of relevant terms. Then are specified the preparation, general requirements, grade standards, sampling, methods of test, packing and marking. Recommendations relating to storage and disinfection are given in annexes A and B respectively.
Acetaldehyde for industrial use — Determination of total content of carbonyl compounds — Volumetric ...
Volumetric method of the determination of carbonyl compounds present by reaction with hydroxylammonium chloride and titration with standard volumetric sodium hydoxide solution in the presence of bromophenol blue as indicator. Has also been approved by the IUPAC.
Lays down the treatment of a test portion by dilution with water (or with ethanol or propan-2-ol if the sample is not completely soluble in water) and removal of carbon dioxide by passing a strem of nitrogen through the solution. The determination is carried out by titration with a standard volumetric sodium hydroxide solution using phenolphthalein as indicator. The nitrogen used shall be free…
Furfural for industrial use — Determination of acidity to phenolphthalein — Volumetric method
Pretreatment of the water used, freshly boiled and cooled, by neutralization by addition of the standard volumetric sodium hydroxide solution or sulphuric acid solution as required. Addition of the test portion and titration with the standard volumetric sodium hydroxide solution in presence of phenolphthalein as indicator until the apperance of a pale pink colour.
Textiles — Integrated conversion table for replacing traditional yarn numbers by rounded values in t...
This International Standard is intended to facilitate the changeover by industry and commerce from traditional yarn numbering systems to the Tex System. It provides a range of recommended rounded linear densities in the Tex System to replace the yarn numbers in the six main traditional numbering systems.
