Puckorius scaling index

Puckorius scaling index. The previously discussed indices accoimt for only the driving force for calcium carbonate scale formation. They do not account for two other critical parameters the buffering capacity of the water and the maximum quantity of precipitate that can form in bringing water to equilibrium. The Puckorius (or Practical) scaling index (PSI) attempts to further quantify the relationship between saturation state and scale formation by incorporating an estimate of the buffering capacity of the water into the index. 

Other indices proposed that have tried to overcome the basic limitations of LSI include the Stiff and Davies Saturation Index, Larson and Buswell Index, Puckorius (Practical) Scale Index, Oddo-Tomson Index, and Larson-Skold Corrosivity Index, some of which are discussed briefly here. 

SDSI = pHactUai pCa pTA K 4.3.3.2 Puckorius (Practical) Scale Index... 

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