The Colorimeter is an optical device that can be used to measure the absorption of a chemical at a specific wavelength of light. This wavelength can be adjusted by using a filter and can be measured with a photometer. The colorimeter is often used to analyze the chlorophyll content in plants.
The process of reading a colorimeter may seem intimidating, but it is quite simple once the concept is understood. The key to reading is to understand the principle of light absorption. White light is a mixture of all the colors of the visible spectrum. When illuminating a substance with white light, some of the colors are absorbed while others are reflected. The amount of light of each color that is reflected can be measured using a colorimeter. This measurement can be converted into a quantitative reading using a calibration chart.
Features
The colorimeter consists of three main parts: the filter, the light meter and the lens. The filter is used to select the wavelength of light to be measured. The light meter measures the amount of light reflected by the filter. The lens is used to focus the light on the light meter.
To measure the absorption of a substance, two measurements are needed: one of the substance in question and one of a reference substance. The reference substance is used to establish a baseline. For example, if chlorine in water is to be measured, a cup of chlorine-free water is used as the reference substance.
The first step is to place the reference substance in the colorimeter. The amount of light reflected by the filter is measured and the value is noted. Then the substance to be analyzed is placed in the colorimeter and the amount of light reflected is measured again. The difference between the two values is used to calculate the absorption percentage of the substance.
It can also be used to analyze a wide variety of substances such as chlorine, nitrogen, phosphorus, calcium and magnesium. It can also be used to determine the pH of a solution. To make a pH measurement, a specific calibration chart is required.
The colorimeter is a useful device for obtaining accurate quantitative data. With a little practice, anyone can learn to use it to analyze a substance.
Principle of Operation
The principle of operation of a colorimeter is similar to that of a spectrophotometer, but the former is usually less expensive and more portable. A colorimeter typically has a single light source and a single detector, whereas a spectrophotometer has multiple light sources and detectors.
The light source in a colorimeter is usually a tungsten or halogen lamp. The light from the lamp passes through a monochromator, which filters out all but a single wavelength of light. The monochromatic light then passes through the sample solution and the detector measures the absorbance of the light.
The detector in a colorimeter is typically a photodiode, which converts light into an electrical signal. The output of the detector is usually displayed as a digital readout or on an analog meter.
Colorimeters are commonly used in industrial settings to monitor the concentrations of various chemicals in solution. For example, the absorbance of light by a solution can be used to determine the concentration of a dye in solution.
Kalstein colorimeter
In this category, our users will find the appropriate accessories for all the equipment you want to use. This includes a wide selection of Colorimeters belonging to YR series, it is widely used in industries of plastic, electronics, paint, ink, textile, garment, printing and dyeing, food, medicine, cosmetics, scientific research institutes, schools and laboratories. It can not only help to carry out color matching and color management studies, but also can control product quality management. If you need to know more about our range of equipment, we invite you to review our catalog HERE For more information, we at Kalstein are manufacturers of the best equipment and we have the best advice, so that your purchase is ideal and at favorable prices HERE.
