I was just doing some research on how to remove rust from home gardening equipment without using caustic chemicals, and found this interesting press release about Evapo-Rust(TM), an environmentally friendly rust removing product that is an alternative to Naval Jelly, the most common way people remove rust from metal tools, car parts, etc. Here’s some info from the press release:
“Evapo-Rust is a soak solution that eliminates flash rust in as little as 10 minutes, and deep rust in hours. It replaces current rust-removal methods of brushing, scraping and blasting. With a virtually neutral pH, it effectively eliminates the need to use acids and dangerous caustics. Using Evapo-Rust requires no special equipment or protective clothing. It is reusable and in most cases, it is sewerable.
One gallon will remove rust from up to 300 pounds, or approximately 20 square feet, of moderately rusted steel. It will not harm copper, brass, aluminum, plastic, rubber or vinyl. It will not remove non-oxide coatings, such as point or chrome, that are still bonded to the surface of the metal.
Award-winning Evapo-Rust previously was names among the “Top 100 Innovations of the Year” by a leading research organization, and received the “Outstanding Technology in Industrial Cleaning” award in another prestigious competition. It is available to metals industries through Daubert Cromwell, the leader in corrosion prevention technology worldwide.”