It allows to monitor simultaneously many different parameters for waste water treatment plants or river monitoring stations with an excellent stability and low operating cost. The same spectrograph can measure organic matter, nitrate, colour, turbidity, phosphate, ammonia and hydrogen sulphide. A complementary UV-visible fluorescence module allows the measurement of aromatics hydrocarbons (PAH). Nephelometric turbidity by visible or infra-red laser diode is also available. The full UV-visible spectrum can also be used to monitor specific chemical process making the UV500 a ideal instrument for chemical plants. External probes can be added for physicochemical parameters like pH, ORP, dissolved oxygen, conductivity and turbidity.

It is based on  CCD (charge-coupled device) giving a higher resolution and a longer lamp life time (3 years) It is based on UV spectroscopy that brings a higher sensitivity than infra-red and gives the possibility to measure several gases simultaneously. A high selectivity is achieved by a fast Fourier transform (FFT) on the absorbance spectrum for all the gases having a periodic structure like NH3, SO2, NO and others. 

Variety of  sensors  like PH sensors,ORP sensor,dissolved oxygen sensor ,totla suspended solid probe,Turbidity probe,chlorine sensor ,conductivity probe and UV probes are available