Application Note: Thermo Scientific Orion AQ3700 Colorimeter

The Thermo Scientific Orion AQ3700 AQUAfast Colorimeter offers preprogrammed methods for testing nutrients. This application note covers testing orthophosphate in surface and wastewater using the Orion AC2095 Tablets. Ortho-Phosphate ions react with two reagent tablets to form an intense blue color , which is proportional to the phosphorous concentration. The Thermo Orion AC2095 Method is accepted by U.S. EPA for drinking water and wastewater compliance monitoring.