 Water Measurement Manual by U.S. Bureau of Reclamation

Official measurement manual. Chapter 12, Discharge Measurements Using Tracers, section 7, Tracer-Dilution Methods: www.usbr.gov/tsc/techreferences/mands/wmm/chap12_07.html . Constant tracer injection, mixed downstream concentration, metering pumps, adequate mixing lengths and fluorometer detection. Illustrative optical calibration and mass-balance numbers in the article are derived examples, not field observations.