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2. Photometric Accuracy Testing The testing of standard solutions is performed on the photometric accuracy of many visible spectrophotometers used by companies, sometimes using standard solutions (such as potassium dichromate, etc.). The standard solution is calibrated with a visible spectrophotometer with a photometric accuracy 2-3 times higher than the photometric accuracy of the instrument being tested, and the visible spectrophotometer to be tested is then used with the calibrated standards. The photometric accuracy is checked. Then based on the test data, make a judgment on whether the instrument being tested is qualified.
3. Testing of standard solutions for stray light detection Measurement and testing units of China's Bureau of Quality and Technical Supervision have used standard solutions (such as NaI, NaNO2, etc.) to detect the stray light of many visible spectrophotometers used by companies. get on. Use a visible spectrophotometer with a photometric accuracy 2-3 times higher than the photometric accuracy of the instrument being tested to calibrate the standard solution, find the location of the test test points, and use the calibrated standard solutions. The stray light of the visible spectrophotometer was detected for detection. Then based on the test data, make a judgment on whether the instrument being tested is qualified.
4. Testing of standard films for stray light tests Steep light of the visible spectrophotometer is sometimes tested using a standard wafer (NaI, NaNO2 solidified in a quartz wafer base). Use a visible spectrophotometer with stray light 2 to 3 times higher than the instrument to be calibrated, locate the inspection test points, and then use these calibrated standards to detect the visible light The stray light of the photometer is detected. Then based on the test data, make a judgment on whether the instrument being tested is qualified.
Visible spectrophotometer is an economical analytical instrument equipped with RS232 output. The excellent metering accuracy is higher than that of ordinary instruments. It is widely used in medical detection, food, petrochemical industry, environmental protection and monitoring and many other fields.
Visible spectrophotometer in the field of measurement applications
Visible spectrophotometer in the field of measurement applications 1. Photometric accuracy test standard test China's Quality and Technical Supervision belongs to the measurement and testing units, for many companies related to the use of visible spectrophotometer photometric accuracy of the detection, generally This is done using standard sheets (such as neutral grey sheets or some amethyst quartz sheets with special absorption peaks). Calibration of a standard wafer is always performed on an instrument with a photometric accuracy that is two to three times higher than that of the instrument being tested, and then the photometric accuracy of the detected visible spectrophotometer is detected using the calibrated standard wafers. Then based on the test data, make a judgment on whether the instrument being tested is qualified.