CAIG Laboratories, RSF-R39-8G , Rosin Solder Flux 8g Syringe
RSF-R39 Rosin No Clean Flux is a mildly-activated rosin flux that is considerably more active than water-white rosin
Recommended for electrical and electronic soldering applications
Excellent for P.C.B repair and rework
No refrigeration necessary
Can be safely left on the circuit board after reflow without cleaning