The TR125 can aid in the chemical digestion of samples that require it, such as in, the determination of COD, TOC, total phosphate and total nitrogen.The required temperatures and reaction times are pre-programmed, and easy to select by using the keypad on the front of the reactor. It is also possible to pre-select reaction times of 30, 60 and 120 minutes as well as continuous operation. When digestion is complete, the reactor automatically switches off and sounds an alarm.