* Recommended for both Water and Gas applications * Water soluble paste that won't leave residue in water piping * Non-acid, non-toxic, and lead free * Ph Neutral * Meets industry standard ASTM B813 and contains no zinc chloride to reduce corrosion concerns * Cleans pipe on application, allowing solder to run more smoothly around the pipe * UK-WRAS approved for potable water * For use on copper, brass, galvanised iron. Lead, zinc, tin. Silver, nickel, mild steel, terne plate, and malleable iron; not for use on Stainless Steel or Aluminium. LA-CO Soldering Flux Paste 125g Steel Laco Soldering Flux Paste is a self-cleaning flux for use with Copper Tube & Copper fittings. Acting as a chemical cleaning agent to detach impurities from joint surfaces when soldering to ensure a better joint. It has an acid-free non-toxic formula, free of lead & zinc chloride offering fitters the benefits of savings, safety and certainty. This product is suitabe for both water & gas installations La-Co Regular Flux Paste (With Brush) 125g Super detergent action cleans as it solders Water soluble for faster flushing from pipe line Non-acid, non-toxic, lead free Contains no zinc chloride For use on most metal types Meets Mil. Spec. Mil-F-4995 Type II Due to geographical locations we are unable to deliver to: Isle of Wight, Isle of Man and Ireland.