Detailed introduction
The ultraviolet-visible spectrophotometer is an analytical instrument established based on the absorption characteristics of substances for electromagnetic radiation in the ultraviolet region (with a wavelength range generally ranging from 10 to 400nm) and the visible light region (with a wavelength range generally ranging from 400 to 760nm), which is a qualitative and quantitative analysis method. The U-3900 and U-3900H are the more advanced models in this series and can be used for the absorbance measurement of various samples in the ultraviolet and visible light regions.