A colorimeter is a scientific device used to measure the absorbance of particular wavelengths of light by a specific solution. It plays a vital role in color analysis across industries like food, textile, paint, and plastics. Whether you're into quality control or scientific research, understanding the colorimeter principle, how it works, its diagram, formula, and the Colorimeter Price can help you make informed choices when investing in this precision instrument.
Colorimeter Principle: How Does It Work?
At the heart of the colorimeter principle lies Beer-Lambert’s Law, which states that the absorbance of light is directly proportional to the concentration of the solution and the path length the light travels through the solution. In simpler terms, the more concentrated a solution is, the more light it absorbs.
Here's how the process works:
- Light Source: The device emits light of a specific wavelength.
- Filter: A filter isolates the required wavelength suitable for the solution being tested.
- Sample Holder: The solution is placed in a cuvette inside the colorimeter.
- Detector: The light that passes through the sample is measured.
- Display: The result shows the absorbance value or transmittance, which relates to the solution’s concentration.
This principle ensures highly accurate and consistent results, especially when color consistency is crucial in manufacturing or lab settings.
Colorimeter Diagram: Visualizing the Mechanism
A colorimeter diagram provides a clear visual representation of how the instrument functions. Typically, a standard diagram includes:
- Light Source (LED or Tungsten Lamp)
- Monochromatic Filter
- Cuvette Holder
- Photodetector
- Digital Display or Analog Meter
This layout helps users understand the flow of light and how the measurement is taken. Knowing the parts also makes it easier to maintain and troubleshoot the instrument.
Colorimeter Formula: The Science Behind Accuracy
The most important colorimeter formula is derived from Beer-Lambert’s Law:
A = ε × c × l
Where:
- A = Absorbance
- ε = Molar absorptivity (a constant for each substance)
- c = Concentration of the solution
- l = Path length (usually the width of the cuvette)
By measuring absorbance (A) and knowing the path length (l) and molar absorptivity (ε), you can calculate the concentration (c) of a solution. This formula is key in chemical labs for analyzing sample purity and consistency.
Colorimeter Price: What Should You Expect to Pay?
When you're planning to buy a colorimeter, Colorimeter Price becomes a crucial factor. Prices vary based on the brand, features, and precision level of the model.
- Basic Models: ₹10,000 – ₹20,000
- Mid-range Lab Models: ₹20,000 – ₹50,000
- Advanced Industrial Models: ₹50,000 – ₹1,50,000+
You get what you pay for. Basic models are great for educational purposes, while industries might opt for more advanced versions with better accuracy, data logging, and connectivity options. Prestogroup offers premium-quality colorimeters built for durability and high precision in industrial settings.
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