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Hydrogen Technologies Standards form the basic framework for market ramp-up
More information
Climate change Standards and specifications support climate targets
More information
Smart Farming Standards and specifications are drivers for the digitalization of agriculture
More information

Standards [CURRENT]

NF T31-230-4 ; NF EN ISO 787-4:2017-12-08
General methods of test for pigments and extenders - Part 4: determination of acidity or alkalinity of the aqueous extract

Title (German)

Allgemeine Prüfverfahren für Pigmente und Füllstoffe - Teil 4: Bestimmung der Acidität oder Alkalitat des wässrigen Extraktes

Edition 2017-12-08

Original language French

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Hydrogen Technologies Standards form the basic framework for market ramp-up

Climate change Standards and specifications support climate targets

Smart Farming Standards and specifications are drivers for the digitalization of agriculture

NF T31-230-4 ; NF EN ISO 787-4:2017-12-08 General methods of test for pigments and extenders - Part 4: determination of acidity or alkalinity of the aqueous extract

Want to learn more?

NF T31-230-4 ; NF EN ISO 787-4:2017-12-08
General methods of test for pigments and extenders - Part 4: determination of acidity or alkalinity of the aqueous extract