Colophony rosin 20g.

Application:

• very good flux when soldering tin-lead alloy
• used to rub the hair of string instruments in order to 
• increase roughness and thereby increase its adhesion to the 
• strings
• as a binder in printing inks, which simultaneously 
• improves its properties
• component lacquers, varnishes, soaps, lacquer, 
• plastics, rubber