Boliden Bergsøe Bera solderwater concentrated 100 ml bottle with brush

.BERA soldering water concentrated 100 ml brush bottle. Product description: BERA Soldering Water Concentrated is a powerful flux used in soldering zinc, copper, brass, steel and iron. The flux effectively cleans the surface of the items to be soldered together. This cleaning is necessary for the tin to penetrate between the metal surfaces and for the tin to bond to the surfaces. The bottle fits perfectly in a pocket. Using BERA Soldering Water Concentrated helps create a beautiful solder joint and strong bonding between the two surfaces being joined together. The clever bottle comes with a brush in its lid which eliminates any possibility of forgetting your brush when you're up on a roof or other high place where you need it most!