WS735 is an alcohol based, organically activated, rosin-free, water soluble liquid flux designed for wave and selective solder applications. WS735 may be applied by spray, foam, dip, or brushed. WS735 is a buffered pH-neutral flux with a highly durable activator providing excellent wetting characteristics producing bright shiny solder joints, even on difficult to wet materials. WS735 performs well on all surface finishes including ENIG, OSP and HASL. WS 735 residues must be removed after soldering.