Soft soldering fluxes — Test methods — Part 3: Determination of acid value, potentiometric and visual titration methods

This document specifies two methods for the determination of the acid value of a flux of types 1 and 2 only, as defined in ISO 9454‑1.

Method A is a potentiometric titration method and is to be considered as the reference method.

Method B is an alternative, visual end‑point, titration method.