http://www.vasthi.com/water-analyzer-2/

Vasthi Instruments adopts the pulse xenon lamp as light source and the ultraviolet optical fiber spectrometer as detector is capable for real-time gathering of absorption spectrum of water pollutants ranging from 200nm to 800nm and real-time analysis of the content of water pollutants by means of chemometric algorithm technology. Optical path as shown below.for more information.