This part of ISO 9455 specifies a qualitative method for determination of the corrosive properties of flux residues on a copper substrate, when subjected to controlled environmental conditions. The test is applicable to type 1 fluxes, as defined in ISO 9454-1.
DS/EN ISO 9455-15:1999 history
1999DS/EN ISO 9455-15:1999 Soft soldering fluxes - Test methods - Part 15: Copper corrosion test