Higher alcohols for industrial use — Methods of test — Part 8: Sulphuric acid colour test
Relates to C6 to C13 alcohols. The principle consists in treatment of a test portion with sulphuric acid solution, under specified conditions, and comparison of the colour developed with that of the same volume of an agreed colour standard. The colour developed may be measured in Hazen units. ISO 1843/8 cancels and replaces ISO Recommendation R 1852-1970, of which it constitutes a technical…
Butadiene for industrial use — Determination of oxygen and argon in the gaseous phase above liquid b...
The analysis is carried out with a gas chromatograph fitted with a thermal conductivity detector. It can be operated at two temperatures, either at - 78 degrees centigrade or at ambient temperature. At ambient temperature, oxygen and argon are not separate and the method thus only allows the total content of these two gases to be determined. When the operations are carried out at - 78 degrees…
Textile machinery — Dyeing, finishing and allied machinery — Classification and nomenclature
Gives a classification and a nomenclature for machines and apparatus used in the bleaching, dyeing, printing and finishing industries, classified, as far as possible, by the operations for which they are intended. In the field of dyeing and finishing equipment a dinstinction is drawn between machines and apparatus. - Replaces ISO Recommendation R 1506-1970.
Procedure for Performing a Survey of Sound Due to Industrial, Institutional, or Commercial Activitie...
1. Scope
1.1 This Standard describes a procedure for the measurement of A-weighted sound levels in and around industrial, institutional, or commercial sites.
1.2 This Standard applies to the measurement of sounds that are essentially non-impulsive in nature.
1.3 This Standard may be used to determine:
(a) Those operating areas where permitted sound levels are exceeded;
(…
Acetone for industrial use — Methods of test — Part 5: Control test with Agulhon's reagent
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…
Acetone for industrial use — Methods of test — Part 1: General
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…
Acetone for industrial use — Methods of test — Part 2: Determination of acidity to phenolphthalein —...
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…
