Stannol ks115 sn99cu1 rosin free halide activated synthetic resin solder wire stannol 573251 stannol ks115 electronic solder wire has been designed for the special requirements of lead free soldering it is suitable for industrial manufacturing as well as for rework and repairstannol solder wire ks115 contains a rosin free halide activated synthetic resin the flux formulation of ks115 is classified to din en 29454 1 type 122b due to its high activity 15 the flux is classified as