The Kester 2235 is a high activity 11% solids organic flux designed for automated soldering of circuit board assemblies where a more aggressive flux is required, but reliability considerations are paramount. 2235, a flux with comparably low solids in respect to other fluxes in the same category, will produce fewer skips on the bottom side surface mount pads. - The residue after soldering is effectively removed in standard water cleaning systems. Although possessing high activity, boards exhibit high ionic cleanliness after water cleaning, exceeding the requirements of MIL-P-28809. No offensive odors or excessive smoke are emitted during soldering. The flux will not create excessive foaming in standard water cleaning systems.