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How is salinity measured?

Last Updated: February 18, 2008

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Salinity can be measured several ways. An instrument called a Hydrometer measures water density which can be converted to salinity. A Conductivity Meter or Salinometer measures salinity by determining how much electrical current the water can conduct. A Refractometer measures how lights bends in the water sample. Salt water bends light more than fresh water. Finally, there are chemical tests that measure salinity.

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