This European test standard specifies a method for the titration and determination of the phosphoric acid content of an hydroalcoholic solution for aerospace applications.This test method is relevant for the determination of total acidity and phosphoric acid content in a reactive thinner of a wash primer or in metal cleaners.
EN 4171:2011 Referenced Document
EN ISO 1513 Paints and varnishes - Examination and preparation of test samples (ISO 1513:2010)
EN ISO 15528 Paints, varnishes and raw materials for paints and varnishes - Sampling (ISO 15528:2020)
EN ISO 3696 Water for Analytical Laboratory Use- Specification and Test Methods (ISO 3696 : 1987)
EN 4171:2011 history
2011EN 4171:2011 Aerospace series - Paints and varnishes - Test method for determination of phosphoric acid index