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EVS-EN ISO 787-4:2017

General methods of test for pigments and extenders - Part 4: Determination of acidity or alkalinity of the aqueous extract (ISO 787-4:1981)

Üldinfo
Kehtiv alates 01.11.2017
Alusdokumendid
ISO 787-4:1981; EN ISO 787-4:2017
Tegevusala (ICS grupid)
87.060.10 Pigmendid
Direktiivid või määrused
puuduvad
Standardi ajalugu
Staatus
Kuupäev
Tüüp
Nimetus
01.11.2017
Põhitekst
The principle of the method consists in the hot extraction of the material by following the procedure specified in ISO 787/3, to the stage of obtaining a perfectly clear filtrate. The determination is carried out with indicator solution (method A). If the solution with the methyl red indicator is yellow (alkaline), titrate it with the hydrochloric acid solution to an orange end-point; if the solution with the methyl red indicator is red (acid), titrate it with the sodium or potassium hydroxide solution to an orange end-point. The other method (method B) is the potentiometric determination. Take 100 ml of the test solution, insert the electrodes of the pH measuring device and read the pH value.
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EVS-EN ISO 787-1:2017

General methods of test for pigments and extenders - Part 1: Comparison of colour of pigments (ISO 787-1:1982)
Uusim versioon Kehtiv alates 01.11.2017
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EVS-EN ISO 18314-1:2018

Analytical colorimetry - Part 1: Practical colour measurement (ISO 18314-1:2015)
Uusim versioon Kehtiv alates 16.10.2018
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EVS-EN ISO 18314-2:2018

Analytical colorimetry - Part 2: Saunderson correction, solutions of the Kubelka-Munk equation, tinting strength, hiding power (ISO 18314-2:2015)
Uusim versioon Kehtiv alates 16.10.2018
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EVS-EN ISO 18314-3:2018

Analytical colorimetry - Part 3: Special indices (ISO 18314-3:2015)
Uusim versioon Kehtiv alates 16.10.2018