Spectrophotometry
![Table top spectrophotometer](/Images/godic/202502/12/Spektrofotometri3823.jpg")
![Beckman IR-1 Spectrophotometer, ca. 1941](/Images/godic/202502/12/Beckman_Ir-1_Spectrophotometer,_ca._19413823.jpg")
![Handheld spectrophotometer used in graphic industry.[1]](/Images/godic/202502/12/Spectrophotometer-in-use3824.jpg")
![Single beam spectrophotometer](/Images/godic/202502/12/Spetrophotometer-en.svg3824.png")
In chemistry, spectrophotometry is the quantitative measurement of the reflection or transmission properties of a material as a function of wavelength. It is more specific than the general term electromagnetic spectroscopy in that spectrophotometry deals with visible light, near-ultraviolet, and near-infrared, but does not cover time-resolved spectroscopic techniques.