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Spectrophotometry: It is a qualitative, quantitative and structural analysis method based on the absorption characteristics of material molecules to the wavelength of 200-760nm electromagnetic wave. Simple operation, high accuracy and good reproducibility. Light with a long wavelength (low frequency) has less energy, and light with a short wavelength (high frequency) has more energy. Spectrophotometric measurement is the measurement of radiation absorption degree of material molecules to different wavelengths and specif... more