This part of ISO 9455 specifies a gravimetric method for the determination of the content of non-volatile matter in soft soldering fluxes. It is applicable to liquid and paste fluxes of type 1, as defined in ISO 9454-1.
DS/EN 29455-1:1997 history
1997DS/EN 29455-1:1997 Soft soldering fluxes - Test methods - Part 1: Determination of non-volatile matter, gravimetric method