Industrial Reverse Osmosis and Industrial Deionization Water Quality Conversion Calculator

The Industrial Deionization and Reverse Osmosis Water Quality calculator below shows automatic calculations between conductivity and resistivity. It also calculates resistivity to conductivity as well as to parts per million or milligrams per liter (ppm, mg/L).

What is the difference between industrial reverse osmosis (RO) water quality and deionized (DI) water quality? And What is the calcuation from water conductivity to resistivity? Generally speaking, reverse osmosis systems will yield around 5-15 Microsiemens [μS] while twin bed or separate bed DI systems yield around 1 Microsiemen [μS]. Mixed bed DI systems can give very high water quality yielding less than 0.06 Microsiemen [μS] or around 18.3 Megohms/cm (million ohms per centimeter). Resistivity is the inverse of conductivity.

For more information on Industrial Reverse Osmosis water vs. Industrial DI water systems, please click here.

Enter a value in any of the blanks below to see an automatic conversion of conductivity, resistivity and TDS (Total Dissolved Solids).

Total Dissolved Solids (TDS, mg/L CaCO3): 
Specific Conductance (microSiemens/cm): 
Specific Resistance (megohms/cm): 
Specific Resistance (ohms/cm): 
Sodium Chloride (mg/L): 
Sodium Chloride (grains/gallon): 

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