This part of ISO 9455 specifies three quantitative methods for the determination of the ionic halide (ex-cluding fluoride) content of soldering fluxes. Halides are calculated as chlorides. A useful qualitative test method for the detection of ionic halides is also de-scribed.
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 to be considered the reference method for these fluxes, is suitable for halide contents generally within the range 0,05 % (m/m) to 2 % (m/m) 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 2.1.2.A and 3.1.1.A, 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 applica-ble to flux class 3.2.1 A 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 may be used for all classes of flux.
BS EN ISO 9455-6:1997 history
2023BS EN ISO 9455-6:2022 Soft soldering fluxes. Test methods. Determination and detection of halide (excluding fluoride) content
1997BS EN ISO 9455-6:1997 Soft soldering fluxes - Test methods - Determination and detection of halide (excluding fluoride) content