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Application of UV-Vis spectrophotometer in metrology
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Http://
release time:
2014-12-16
Clickthrough rate:
397
Key words: UV-visible spectrophotometer; application in the field of metrology; US instrumentation ; UV-1100; UV-1200
The application of UV-Vis spectrophotometer in the field of measurement 1. The test of photometric accuracy test standard The measurement test unit of China Quality and Technical Supervision Bureau, the photometric accuracy of many UV-visible spectrophotometers used by enterprises concerned, It is usually carried out using standard sheets (such as neutral gray sheets or some transparent quartz sheets with special absorption peaks). The standard is always calibrated on an instrument with a photometric accuracy 2 to 3 times higher than the instrument being tested, and then the calibrated photometric accuracy of the UV-Vis spectrophotometer is detected using these calibrated standards. . Based on the detected data, a judgment is made as to whether the instrument to be inspected is qualified. 2. Photometric accuracy test standard test The measurement and test unit of the Quality and Technical Supervision Bureau of China, for the detection of the photometric accuracy of many UV-visible spectrophotometers used by enterprises, sometimes using standard liquids (such as potassium dichromate) Etc.). Calibrate the standard solution with an ultraviolet-visible spectrophotometer with a photometric accuracy that is 2 to 3 times higher than the photometric accuracy of the instrument being tested, and then use these calibrated standards to measure the UV-visible spectrum The photometric accuracy of the photometer is detected. Based on the detected data, a judgment is made as to whether the instrument to be inspected is qualified. 3. Testing of standard liquid for stray light detection The measurement and testing unit of China Quality and Technical Supervision Bureau, for the detection of stray light of many UV-visible spectrophotometers used by enterprises, sometimes using standard liquids (such as NaI, NaNO2, etc.) Come on. Using a UV-visible spectrophotometer with a photometric accuracy that is 2 to 3 times higher than the photometric accuracy of the instrument being tested, calibrate the standard solution to find the position of the test point, and then use these calibrated standard solutions. The stray light of the detected UV-Vis spectrophotometer is detected. Based on the detected data, a judgment is made as to whether the instrument to be inspected is qualified. 4. Standard sheet testing for stray light testing Sometimes the standard sheet (solidified NaI, NaNO2 in a quartz base) is used to test the stray light of the UV-Vis spectrophotometer. Using a UV-visible spectrophotometer that is 2 to 3 times higher than the instrument being tested, calibrate the standard sheet to find the position of the test point, and then use the calibrated standard sheet to detect the UV It is seen that the stray light of the spectrophotometer is detected. Based on the detected data, a judgment is made as to whether the instrument to be inspected is qualified. Key words: UV-visible spectrophotometer; application in the field of metrology; US instrumentation ; UV-1100; UV-1200 10000puffs Disposable Vape
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