Utilizing spectrometry, the spectrometer probes are the first and only instruments in the world that can measure optical spectra from 200 to 750 nm directly in liquid media. Measure a combination of TOC, DOC, BOD, Nitrate, Nitrite, BTX, turbidity, TSS, UV-254, color, ozone, temperature, and pressure all from one instrument in addition to monitoring for contaminants and providing an alarm when identified. There are no reagents used, no need for regular calibrations, and the probes utilize self cleaning systems for minimal maintenance requirements .