Uses Of Colorimeter: Principles and Uses

A colorimeter is a device used in colorimetry to determine the absorption of particular wavelengths of light by a given solution.

• It is widely used to calculate the concentration of a known solute in a given solution using the Beer-Lambert law.
• The law states that the concentration of a solute is proportional to its absorbance.
• The colorimeter was invented in 1870 by Louis J Duboscq.
• A colorimeter is a light sensitivity device specifically used to measure the solute in a solution.
• The device is also used in measuring the intensity of the solution.

Key Terms: Colorimetry, Spectro Analysis, Solvent, Solute, Solution, Light Sensitivity, Intensity, Concentration of a solution, Beer-Lambert law, Color intensity

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What is a Colorimeter?

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A colorimeter is a device that is used in colorimetry.

• Colorimetry comes under the method of Spectro analytics.
• Whereas a colorimeter is an instrument that measures the number of transmitted rays of light absorbed by any specific solution. 
• Colorimetry is based on the variation in color of a solution due to a change in the concentration of a solute component.
• The color is either the inherent color of the part or the result of the formation of a colored species after the addition of an appropriate reagent.
• The color intensity can then be compared to that produced by treating a known quantity of the chemical substance in the same way.

Colorimeter

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Principles Of The Colorimeter

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The following are the Significant principles of colorimeter:

• The intensity of the light that is transmitted at the point of absorption wavelength is a function of the chemical concentration in the solution.
• The optical system of the colorimeter isolates a narrow waveband of light at a specific absorption peak for the measured chemical. 
• Whenever light is in use at this wavelength, Beer’s law is followed by maximum sensitivity for the instrument in usage.
• The use of a narrow wavelength band makes the elimination of the absorption effects possible for other chemicals in the solution.
• However, the effect of some chemicals cannot be eliminated when they change the formation of complex ions of the measured chemical.
• In these cases, when uranyl nitrate is measured in a solution containing nitric acid.

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Uses Of Colorimeter

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The following are the major uses of colorimeter are:

• A colorimeter is a portable device that is used to analyze the color contrast and brightness on a screen.
• This allows the user to set the best-quality picture.
• Colorimeter in the printing industry is a core element system for color management.
• It also checks the electronic components, and quality of paper, and measures the quality of printing ink.
• The diamond merchants also use colorimeters to measure the optical properties of stones.
• The device colorimeter is also used in the industry of cosmetology to measure the factor of sun protection products that are to be applied on the skin.
• Colorimeter analyses the tones of skin and tooth color which assists diagnose the dermal and dental diseases.
• The devices are even used in hospitals to test the concentration of hemoglobin in the blood. 
• The colorimeter is also used to test the quality of water by screening for chemicals.

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Things To Remember

• A colorimeter is a light sensitivity device specifically used to measure the solute in a solution.
• A colorimeter is a device that is used in colorimetry.
• The optical system of the colorimeter isolates a narrow waveband of light at a specific absorption peak for the measured chemical. 
• Whenever light is in use at this wavelength, Beer’s law is followed by maximum sensitivity for the instrument in usage.
• The colorimeter is also used to test the quality of water by screening for chemicals
• The device colorimeter is also used in the industry of cosmetology to measure the factor of sun protection products that are to be applied on the skin.