This article throws light upon the top twenty-three instruments used for monitoring pollutants. Some of the instruments are: 1. Computerized Gas Chromatography or Digital Chromatography 2. Computerized Mass Spectrometry 3. Computerized N.M.R. Spectroscopy 4. Digital pH Meter and Digital Conductivity Meter 5. The Universal Polar Graphic Analyzer 6. Digital Dissolved Oxygen Analyser and Others. Instrument […]