BST-559A white solder paste flux with piston applicator. High wetting capacity, which allows a better distribution of the tin on the surface to be soldered. Suitable for high density welds and small components. It reduces oxidation and the formation of porosity in the weld. It does not have lead and halogen, which makes it safer for the environment. It comes in a plastic container with a screw cap for easy application and storage. Melting point: 170°C; Boiling point: 260°C; Working temperature: 183-227 °C; Density: 1.85 g/cm3; Viscosity: 10000-15000 CPS.