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pH Meter

• A pH Meter measures the pH, the "active" acidity, which closely corelates to the hydrogen ion concentration of a solution
  
  
• A pH Meter consists of a number of parts, whose number depends on the unit's sophistication.
  
  
• A pH Meter -
  
  
  • can be designed with a separate reference electrode, glass electrode and temperature compensation control.
    
    
    
  • can be designed to incorporate the reference electrode into the glass electrode, forming one unit refered to as a combination electrode.
    
    
  • can be designed to incorporate a temperature probe allowing for automatic temperature readings.
    
    
  • can be designed to be able to automatically calibrate itself to the selected pH buffers
    
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• A pH meter converts the difference in the electric potential generated between the reference electrode, which is known and constant, and the electric potential of the pH electrode which varies according to the solution's pH, to pH units.