Alpha SLS-65H Soldering Flux is an active, low solids, no-clean flux. It was specifically developed to eliminate the tendency for solder balling and solder bridging-two defects which are normally associated with the use of the chip wave. Of all low solids (< 4% solids), no-clean fluxes, Alpha SLS-65H exhibits the lowest tendency for solder ball generation over a wide variety of solder masks. Alpha SLS-65H should be considered for use by any assembler who has board designs which are sensitive to solder bridging, performs pin testing, and whose specification requires an extremely low frequency of solder balls.