135 Soldering Flux
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. 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. The high purity grade of alcohol solvent makes this flux very reliable for solderability testing.
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