This document specifies three quantitative methods for the determination of the ionic halide (excluding fluoride) content of soldering fluxes. Halides are calculated as chlorides. A useful qualitative test method？for the detection of ionic halides is also described.

Method？A is a potentiometric titration method？for the determination of halide (excluding fluoride) content and is applicable to flux classes？1 and？2, defined in ISO？9454-1. This method, which is considered the reference method for these fluxes, is suitable for halide contents generally within the range of 0,05？% mass fraction？to 2？%？mass fraction in the non-volatile matter of the flux.

Method？B is a titration method？for the determination of the total halide (excluding fluoride) content of water-soluble fluxes. It is applicable to flux classes？2122 to 2124, 3112 to 3114 and 3212 to 3214, as defined in ISO？9454-1.

Method？C is a titration method for the determination of the halide (excluding fluoride) content of water-soluble fluxes containing phosphates and is applicable to flux class？331, as defined in ISO？9454-1.

Method？D is a qualitative test, using silver chromate test paper, for the presence of ionic halides. The technique can be used for all classes of flux.