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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