The compact Hach COD Reactor and reagent vial system replace the hot plates, digestion flasks and reflux condensers used in the macro COD method. The reactor is factory set to maintain 150 C, consumes less than 240 watts of power, and generates far less ambient heat than open reflux setups. Reagent vial necks and caps reach a temperature of approximately 85 C because they extend above the reactor. During digestion, a temperature differential develops between the reaction mixture at 150 C and the cap at 85 C, which induces proper refluxing action.
Samples are ready for colorimetric or titrimetric measurement after a two-hour digestion.
The COD Reactor offers two settings for temperature control. The reactor warms up in approximately 40 minutes. C. A thermometer is included for temperature verification. Unattended operation Equipped with a self-timer, the COD Reactor can perform unattended digestions and shut off automatically. Or choose continuous operation by using the rocker switch located on the reactor's front panel.