The Kester 985M is a low solids, halide-free, no-clean flux that is designed for wave solder, selective solder and touch up processes. 985M was developed for use with both traditional tin-lead and lead-free solder alloys. 985M exhibits improved soldering performance to minimize solder bridges (shorts) during all soldering operations. - This flux is suitable for automotive, computer, telecommunications and other applications where reliability considerations are critical. As tested under J-STD-004A specifications 985M is classified Type ROL0.