Body'
Guangzhou Instrument Calibration
Body' Spectrophotometer includes stray light calibration, absorbance calibration and wavelength calibration.
Calibration of body and stray light To calibrate the instrument of stray light, you can use a solution that can completely absorb monochromatic light of a certain wavelength and absorb very weakly at other wavelengths. Often a small amount of stray light will cause serious problems. Large measurement error, the approximate value of stray light can be inferred from the light transmission of this solution.
Calibration of volume and absorbance. Measurement calibration of absorbance should use a pure substance solution of a certain concentration as the standard, and the absorbance coefficient of the solution should be checked by different laboratories. In order to ensure that the absorbance of the standard solution is not affected by the slight change of the measurement wavelength. Changes due to movement, often choose a substance with a smoother absorption peak, and at the same time require a stable solution.
For body and wavelength calibration, solutions, filters or vapor with narrow absorption bands are used to calibrate the required light wave range. If high precision is required, the rays emitted by the discharge lamp can be used for correction. You can also put a small drop of benzene in a one centimeter thick absorption cup to measure its absorption wavelength.
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Consultation (Foshan Measurement Calibration Center)
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