Nokorode Aqua flux is a creamy, smooth paste formulated to meet ASTM B-813 specifications. Aqua Flux is water washable, so it may be flushed from the piping system and limit the corrosive effects found in other fluxes. It is lead-free and may be used with all types of soft solder, including 95/5, 60/40, 50/50 and 40/60 solders. Unlike other "gels" or liquid fluxes that meet ASTM B-813, Aqua Flux will not run or drip off acid brushes, pipes and fittings during application. The outstanding wetting characteristics of Aqua Flux assure a superior joint.