Millions and millions of strong, leak-free joints around the world speak to the product reliability that professionals have with LA-CO Regular Flux Paste.
Markal® Soldering Flux, Regular, 1 lb, 6.5 to 7 pH, Paste, Composition: Ammonium Chloride, 2-Hydroxyethylammonium Chloride, Stearic Acid, White, Odor/Scent: Faint, >400 deg F Flash, Applicable Materials: Copper, Brass, Galvanized Iron, Lead, Zinc, Tin, Silver, Nickel, Mild Steel, Terne Plate and Malleable Iron