It is a single beam UV-VIS monitoring 

system with split beam that provides 

accurate measurements and increases 

the stability of the baseline. 

With a wide range of wavelength 

spectrophotometer is used in many fields.

Many methods of measurement: 

the wavelength scanning, 

measurement as a function of time (kinetic measurements), 

measurements at multiple wavelengths, 

counting derivative etc.

A near infrared spectrometer 
(also known as NIR spectrometer) is an analytical 
instrument used to examine pharmaceutical, 
chemical or medical materials in bulk, 
with very little sample preparation. 
Near infrared spectrometers offer 
spectral wavelength ranges around 
12,500 to 4000 cm-1 or more.