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The Larson Ratio (LR) describes the corrosivity of water towards
mild steel.
The index is the ratio of the twice moles per liter (mol/L) of
sulfate (SO42-) plus chlorides (Cl-), to the moles per liter of
alkalinity (in form bicarbonate and carbonate) :
Interpretation of results (personal suggestions):
(according to Larson, tendency to corrosion with LR> 0.5)
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