Part of the ALPHA® 7 Series Low Residue Fluxes, Alpha PV-71 Tabbing and Stringing Flux was specifically designed so that minimal flux deposits inside tabbing and stringing equipment and spray nozzles, with practically zero residue after soldering. Alpha PV-71 Tabbing and Stringing Flux is a low solids formula employing a unique proprietary activator system which provides excellent soldering in standard module assembly processes and methods that are widely used.