5 Pieces of Rosin Flux Pen for DIY Solar Cells Panel Due to popular demand, we are making our Rosin flux pens that are part of our solar cells kit available for purchase individually for DIY solar panel makers. Rosin flux is a chemical cleaning agent that facilitates soldering, and it's in a very user friendly pen format for easy application onto our solar cells's bus bars and tabbing wires. Always apply flux on the bus bars or wires first before soldering, and the bonding job will be easy. It works great with our solar cells. For precision application of rosin flux, in a convenient microtip pen format. RA type flux. Superior fluxing ability Instant wetting After soldering, the rosin residue is non-corrosive, non-conducting, moisture resistant, and fungus resistant Meets Mil. spec. #RA 14256 ANSI Spec. 004 ROMI class, J Standard How to use the flux pen: The tip of the flux pen is dry when new. There is a seal inside the flux that you need to break before the flux liquid will moist the tip. To break the seal, point the flux pen upward, and depress the tip into the shaft of the pen. The tip will spring back to its original position. Wait for a few minutes then the tip will be moister and ready for use.
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