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This control is intended essentially for the detection of alcoholic impurities in aceton. The principle consists in treatment of a test portion with Agulhon's reagent (potassium dichromate solution added to nitric acid solution) under specified conditions. The presence of certain impurities, in particular alcoholic ones, is indicated by a blue or violett coloration. International Standards…

Gives general instruction and specifies the methods for the determination of density at 20 °C, the determination of dry residue after evaporation on a water bath, the measurement of colour, the determination of distillation range and the determination of water content. International Standards ISO 757/1 to ISO 757/5 cancel and replace ISO Recommendation R 757-1968, of which they constitute a…

The principle of the method consists in dilution of a test portion with carbon dioxide-free water, titration of the test solution, if acid, with standard volumetric sodium hydroxide solution, using phenolphthalein as indicator. The method is applicable to products having acidities, expressed as acetic acid, equal to or greater than 0,0006 % (m/m). International Standards ISO 757/1 to ISO 757/5…

This Guide lays down methods of indicating conformity with standards and reference thereto in standards. Whilst it is directed specifically to conformity with standards, it is recognized that it may be equally applicable to conformity with other technical specifications. It applies to indications of conformity made under the authority of a certification body. This Guide is primarily intended for…

This Guide lays down methods of indicating conformity with standards and reference thereto in standards. Whilst it is directed specifically to conformity with standards, it is recognized that it may be equally applicable to conformity with other technical specifications. It applies to indications of conformity made under the authority of a certification body. This Guide is primarily intended for…

This International Standard establishes a list of basic terms used in designating the pirn winding machines and their accessories as well as certain corresponding defintions in the field of terminology for weaving preparatory machinery. - Replaces ISO Recommendation R 476-1966 and constitutes its technical revision.

This International Standard establishes a list of basic terms used in the designation of cone and cheese winding machines and their components as well as the corresponding definitions related to the terminology of textile machinery for cross winding. - Replaces ISO Recommendation R 477-1966 and constitutes its technical revision.

It has the status of a horizontal standard in accordance with IEC Guide 108.

Applies to concrete vibrators, the active part (vibrator bottle) of which is intended to be immersed into the mass of concrete to be vibrated. Stationary concrete vibrators intended to vibrate concrete moulds, for example for prefabricated concrete elements, are not within the scope of this standard.

Titration of a prescribed volume of mixed Fehling's solution with a solution of a test portion under specified conditions, using methylene blue as internal indicator. An informative annex provides a metod for testing standard reference anhydrous D-glucose, necessary for the procedure.