Roller Tinning Cover Salt is a highly active, water soluble, granular, acidic salt, specially formulated for PCB roller tinning applications. Generally the cover salts are sprinkled over the melted surface of the molten solder to prevent dross formation and oxidisation. Due to the Hazardous nature of this product, if ordering for export overseas please contact us and do not order online as extra freight charges may be applicable. 5Kg
