6-position thermoreactor for Chemical Oxygen Demand (COD) with settable temperature (up to 200 °C) and operating time (up to 199 minutes). The ECO 6 is designed to process 6 samples (200 ml test tubes, Ø 42 mm) simultaneously. Electronic temperature control ensures temperature regulation from ambient to 200 °C and the analysis time can be set from 1 to 199 minutes or continuous. A LED display shows the temperature and time remaining. Dedicated adapters are available for different sizes and quantities of test tubes making the ECO 6 an extremely flexible and versatile instrument: 6 Ø 42 mm test tubes; 6 Ø 22 mm test tubes or 18 Ø 16 mm test tubes.