The Triton TR86 Turbidity Analyzer from Electro-Chemical Devices features an advanced transmitter combined with a T80 Universal Analyzer to provide reliably accurate turbidity monitoring with the capability to add a second measurement parameter to the system, such as pH, ORP, conductivity, DO or various pIONs. It comes in a choice of three separate ranges from 0 to 4,000 NTU for continuous measurement. The advanced infrared optical sensing technology emits an 850 nm beam of near infrared light into the sample where it is scattered by the particles suspended in the water. Measurement is achieved when the amount of scattered backlight returns to the sensor, which is then correlated to the amount of suspended solid particulates in the water. The sensor’s measurement response time depends on the size, shape and composition of the suspended particles. It is accurate to 2 percent of reading or 0.5 NTU, whichever is greater. 800-729-1333; www.ecdi.com