"GET THE LEAD OUT"
Stone Chemical Company has obtained two United States Patents (US Patents Nos. 7,771,542 and 8,618,038) for the invention to safely remove surface lead from metals including brass and copper which are used in potable water systems. The removal of lead from the environment is currently an EPA goal for health and wellness as reflected in the 1991 National Primary Drinking Water Regulations and the 1996 Safe Water Drinking Act amendments.
Lead has been a lubricant for brass, bronze, and copper processing since ancient times. Brass can contain several hundred ppm to 2 % residual surface lead. Lead is hard to remove because the alloy metals in brass (primary Zinc) and bronze (primarily Tin) can also be plucked out with lead by conventional means and ruin the alloy. Current strategies for removing lead require harsh conditions, produce low yields and have waste problems.
Responding to this need, Stone Chemical Company has brought to market a unique product. Lead is reduced to as low as 1 part per billion on the metal surface by a unique product that cleans, brightens and also removes oil and grease contaminants from the surface of copper, brass, and bronze while providing a passivated surface which resists tarnishing. This product, Stone Chemical Company’s CU400L, meets EPA mandated NSF61 requirements for the removal of lead from copper and brass for drinking water systems. It is an easy to use liquid wash at mild temperature and does not pose unusual waste disposal problems like conventional methods.
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Please visit: Stone Chemical Co.
1300 Iroquois Dr. Ste. 135
Naperville, IL 60563 US
Our goal is to continue to provide outstanding quality and service to our customers. Our vision is to be your resource for quality metal finishing chemicals. Our mission is to help your processes be more efficient using our "NEVER DUMP" process chemicals.
Stone Chemical Company can fulfill your requirements for aluminum, brass, copper, bronze, and steel finishing.
We are ISO 9001:2008 Certified and provide quality service and technical support to our customers. Orders and requests for customer service are promptly acknowledged and fulfilled.
Stone Chemical Company produces anodizing chemistry for aluminum anodizing as well as specialty chemicals for processing copper, brass, bronze, silver, nickel, zinc and other non-ferrous metals.
In addition to aluminum anodizing chemicals, Stone Chemical also manufactures, rust removers, pretreatment chemistry for plating, specialty cleaners for industrial parts washing, vehicle cleaners, aircraft cleaners and stainless steel passivation chemistry.
Stone Chemical Company aluminum anodizing, specialty parts washing and cleaning products and non-hazardous rust removers are formulated to be more user and environmentally friendly while also providing clear benefits and distinct performance advantages.