With the development of science and technology and the progress of precision instrument manufacturing, the performance of colorimeter is also constantly optimized and perfected. The colorimeter is an instrument that decomposes light with complex components into optical latent lines. The colorimeter has high sensitivity, a wide application range, high accuracy, compact structure, low price, easy operation, less sampling, and superior anti-interference performance. Therefore, it has been widely used. Through the application of colorimeter, qualitative analysis and quantitative analysis of samples can be carried out. Quantitative analysis is to measure the concentration of a certain substance in a solution, and qualitative analysis is to determine the titanium material according to the measured peaks of absorption light at different wavelengths. Different light sources have their own unique emission paths, so. Different luminophores can be used as the light source of the colorimeter, and a continuous spectrum composed of red, orange, yellow, green, blue, indigo, and violet can be obtained, which can be used as the light source of the colorimeter.
The development trend of colorimeter
A colorimeter is a kind of precise optical latent chemical analysis equipment, which has the characteristics of high precision, low detection service, and low price. It can perform quantitative measurement, kinetic test, spectral scanning, multi-wavelength testing, food safety testing, total phosphorus, and total nitrogen testing, heavy metal testing, DNA-protein testing, pesticide residue testing, etc. Therefore, colorimeters have been widely used in daily chemical, food manufacturing, beverage manufacturing, and other fields. It can be seen that the colorimeter has a good application prospect and a large market demand.
Under the background of today’s information age and social information, realize the organic combination of colorimeter with emerging technologies such as computer technology, information technology, and intelligent technology, and improve the level of intelligence and automation of colorimeter. It is ensured that the colorimeter can move and maintain the best working state, and the occurrence of artificial errors can be prevented, so that the accuracy and reliability of the detection results of the colorimeter can be significantly improved. At this stage, improving the level of intelligence and automation of colorimeters is the main development direction of colorimeters.

Sources of error in colorimeters
The wavelength accuracy is the main measurement index of the colorimeter which refers to the degree of agreement between the indicated wavelength and the actual wavelength. Based on this, the wavelength indication error has a direct effect on the star measurement accuracy of the colorimeter. influence. Although Keyber Beer’s law is the basic principle and theoretical basis of colorimeter, it is only established on the basis of applying a single wavelength. In the practical application of colorimeter. be affected by stray light. Stray light refers to the sum of light different from the wavelength of light projected on the light detection instrument. The error caused by stray light is basically the same as that of several stars. If the stray light of the colorimeter is 1%, the error caused by it is also about 1%. The main causes of stray light are that the optical elements are polluted by water droplets, mildew, or dust; the second is light leakage, which makes the composite light mixed; the third is that the optical elements are damaged or their positions are changed.
The flatness of the baseline is also the main measurement index of the colorimeter which refers to the photometric noise of each wavelength point in the full band of the colorimeter. The combination of even line flatness, drift, and disc sound can reflect the comprehensive performance of the colorimeter. Among them, the drift refers to the time-dependent luminosity change of the colorimeter at 50 mm, and the star noise refers to the photometric noise of the colorimeter at 250 nm and 500 mn. The flatness of the baseline is too poor, which may lead to the deformation of the map or the appearance of false peaks, which will bring greater errors to the star measurement results of the pocket colorimeter.
Daily maintenance and maintenance of colorimeter
The pocket colorimeter equipment should be installed in the light source room, and the optical components such as sealed windows, mirrors, and lenses should be cleaned in time. It should not be touched by hand. Exposure for a long time. Replace the desiccant regularly to avoid moisture in the dispersive element of the monochromator box. When the instrument is finished or suspended from use, cover it with a dust cover and place moisture-proof silica gel to prevent it from becoming moldy. The dust on the mirror and lens should be blown off with a blower. Fingerprints and other impurities should be wiped off with a wiper. When the pollution is serious, a new mirror and lens should be replaced.

In order to prolong the life of the colorimeter light, in the process of daily use of the instrument, the number of times the instrument should be switched on and off as much as possible. If the brightness of the light source is significantly weakened or unstable, it is necessary to replace the new light source in time. After the light source is turned off, it cannot be turned on again immediately. If the time interval between the two measurements is short, the light may not be turned off.
The spectroscopic system is the most important optical element in the colorimeter and its cleanliness and precision are extremely demanding. Do not open the sealed hood at will; when it must be opened, it needs to be operated by professionals to avoid spectroscopic spectroscopy. The system is damaged.
According to the requirements of the operating specifications, use the absorption cell correctly, carefully protect the optical surface of the absorption cell, and avoid baking and heating the absorption cell on an electric furnace or flame.
If the voltage of the power supply fluctuates greatly, it is necessary to equip the colorimeter with a voltage stabilizer to give it effective overvoltage protection.
A colorimeter is a physical and chemical analysis instrument integrating electronic technology, compact machinery, and optical technology, and has a broad development space. In practical application, the colorimeter will be affected by errors in wavelength accuracy, baseline flatness, etc. Therefore, the maintenance and maintenance of the colorimeter should be strengthened in the daily use process to ensure the colorimeter. The role of the meter can be fully exerted.