What is Saturation index?
Langlier saturation index indicates degree of saturation of CaCO3 in water Used in industry to stabilize water. LSI is based on 1) pH of water 2) Total dissolved solids 3) Alkalinity 4) Calcium concentration 5) water temperature - LI positive - it leads to deposition & scaling - LI negative - it leads to corrosion - LI should be kept zero - to avoid corrosion & scaling