Available in light amber to yellow liquid form, scale inhibitors are used to prevent deposition of scale on the internal surfaces of pumps and heat exchangers. Scaling formation can affect performance of various industrial equipments and can lead to their damage. Liquid based scale inhibitors prevent build up of magnesium and calcium ions that tend to accumulate and result in scaling. Standard of these anti scaling products has been tested as per their storage life, composition, effectiveness in resisting scale formation and purity level.