Calculated TDS is aEC where ...
Published by William Turner, Trustee, Chief Hydrogeologist, CEO, QB, and licensed escrow officer at WaterBank
Calculated TDS is aEC where EC in electrical conductivity and a is a constant that is between 0.55 and 0.7 5 so, 0.67. You have the formulabackwards. The authority is Hem, J.D, 1989, Study and Interpretation of the Chemical Characteristics of Natural Water, U.S. Geological Survey Water Supply Paper 2254 p. 67. Try abebooks.comorgotoUSGS.gov/Publications