Wednesday, September 11, 2019

Advantages and disadvantages of colorimetry

Colorimetry is a tool that measures the color of a substance or sample and classifies it according to a color chart. The colorimeter is a light-sensitive instrument used to determine the absorption and transmittance of light passing through a sample solution. It calculates the concentration or intensity of the color which developed by introducing a particular reagent into a sample solution. 

Advantages of colorimetry:

  • It is economical, fast and has the simple operation of a spectrometer.
  • It is a fast and convenient method as compared with the volumetric or gravimetric processes and they are easily optimized for automation.
  • It does not require an experienced person to handle it.
  • The chemical substances in water can be identified by this method.
  • It applied to the quantitative analysis of colored compounds.
  • Another advantage of colorimetry is that it is a portable system you can easily carry and transport.

Disadvantages of colorimetry:

  • The major disadvantage of colorimetry is that colorless compounds cannot be analyzed.
  • It needs more amount of sample for analysis.
  • You require preparing a standard solution.
  • Its sensitivity is low.
  • The same colors from interfering material may create errors in results.
  • The precise wavelength bandwidth may be required for more accurate analysis.
  • The interference with the matrix can lead to poor results in uncontrolled conditions.


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