Kester 135 Rosin Non-Activated Soldering Flux, 1 gal Bottle, Amber, MFR ID 6300000135

The Kester 135 non-activated rosin flux is an amber colored homogeneous solution of pure water-white rosin dissolved in a suitable solvent. The particular solvents used are liquids which exhibit the same non-corrosive and non-conductive properties as rosin itself. The high purity grade of alcohol solvent makes this flux very reliable for solderability testing. - 135 is carefully processed to remove foreign particles found in natural rosin. Under the older MIL-F-14256, this flux was QPL approved as type R. 135 is considerably more mobile because of its solids content and the low surface tension of the alcohol solvent.