TALON Water Soluble Paste Flux is a completely water soluble/flushable, acid free, lead free, self-cleaning flux that is suitable on all types of tin solder and their alloys. Its self-cleaning action will solder dissimilar metals and works excellent on older or tarnished copper without having to brush or sand the surface. Leaves no residue and will not transfer taste or odor in water coolers and potable water systems. TALON Water Soluble Paste Flux withstands overheating by retaining the flux in the area of the joint being soldered. Meets ASTM B-813.