Determination Of Electrical Conductivity Of Water Using Conductivity Meter

Determination  Of Electrical Conductivity Of Water Using Conductivity Meter




Apparatus Required: Conductivity Meter, Conductivity Cell, Beaker

Theory: The conductivity of water is a property by virtue of which the current is passed through it.It is measured in Micromho/cm or Millimhos/cm or Millisimmen/m


Procedure:
  1.  Switch on the instrument.
  2. Connect the connectivity cell to instrument.
  3. Put instrument in calibration mode and adjust value that is equal to the value of cell constant.
  4. Check accuracy of instrument by checking the conductivity of standard solution of known concentration.
  5. Prepare it by dissolving 0.5232 gm potassium chloride in 1 l deionized water. The conductivity of this solution is 1 millimhos/cm or 1000 microsimens/cm.
  6. Measure the conductivity of KCL solution and check whether it is 1 millimhos/cm or not.
  7. If it's right then check the electrical conductivity of the water sample.
  8. Take sample in beaker & dip the cell in it.
  9. Keep the instrument in mhos.
  10. To get better accuracy put the instrument according.
  11. Note down the value of display.
  12. Above noted value is the measured conductivity of the water sample.
Result:

Correct Value= Measured Value x Cell Constant

T.D.S of above sample= (0.55 to 0.9) x Electric Conductivity mg/l


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