La-Co Regular Soldering Flux Paste 454 g (1 lb) | Water Soluble ASTM B813 Certified

• Super detergent action cleans as it solders; non-acid, non-toxic, lead-free
• Contains no zinc chloride; use with all lead-free and common soft solders
• For use on copper, brass, galvanized iron, lead, zinc, tin, silver, nickel mild steel, terne plate, and malleable iron
• Meets mil. Spec. Mil-F-4995 type II; super detergent action cleans as it solders

• Prepare Surfaces — Ensure the metal surfaces to be soldered (e.g., copper pipes, PCB pads) are clean and free from grease, oil, or heavy oxidation. Lightly abrade if necessary to expose fresh metal.
• Apply Flux — Apply a thin, even layer of La-Co Regular Soldering Flux Paste to the cleaned surfaces using a brush or applicator. Do not over-apply; a small amount is sufficient to activate the solder.
• Solder Joint — Heat the joint with your soldering iron or torch and apply the solder. The flux will melt, clean, and promote solder flow, creating a strong, reliable connection. Work quickly to avoid overheating.
• Clean Residue — Once the joint has cooled, use a damp cloth or sponge with clean water to thoroughly wash away any flux residue. This water-soluble cleanup is essential for preventing long-term corrosion, especially in plumbing.

Typical situations where La-Co Regular Soldering Flux Paste 454 g (1 lb) | Water Soluble ASTM B813 Certified helps — illustrative scenarios, not customer reviews.