standard scale chip material which is employed for testing the scale removing ability of a formulation consists of water insoluble metal carbonates however the present invention may be used to remove both inorganic and organic scale particularly calcium carbonate and iron oxides the present descaling composition may be employed on a variety of surfaces to remove scale which has built up the surfaces include bathroom tiles sinks tubs faucets glass and plastic enclosures fiberglass walls bathroom and kitchen work surfaces stainless steel surfaces chrome surfaces and any other nonporous surface which may be subject to scale accumulation of course the present invention may also be employed to clean swimming pool tile surfaces plastic and metal parts on swimming pool pumps skimmers and other hardware associated with swimming pools wherein scale may be a problem in fact any unit apparatus or equipment where scale is a problem including but not limited to plumbing units household bathrooms household kitchens industrial boilers industrial coolers heat exchanges condensers central heating systems nd humidifiers automobile engine radiators and piping found in engines may benefit from the use of the present invention the present invention may be employed by adding the composition or descaling composition to the water flowing by or otherwise in contact with the surfaces to be descaled the scale may also be removed by direct application by using.