A suggested cleaning solution is one ounce non-ionic detergent to 5 gallons water. B. Acidic Cleaning Materials 1. Muriatic acid, which is readily available in hardware stores, is a raw acid. It is a by-product of processing steel and contains metallic particles that can cause ferrous staining. C. Alkaline, Corrosive, and Biocidal Cleaning Materials 1.
Calcium hypochlorite is available from swimming pool suppliers.
A suggested cleaning solution is one ounce calcium hypochlorite to one gallon hot water. Solutions of household ammonia are recommended for cleaning light colored stones. Ammonia is particularly effective for the removal of biological growth. One cup ammonia to one gallon water. Quaternary Ammoniums have a slightly different chemical structure than ammonium hydroxide.