Heater with a thermostat is the field of COD analysis of wastewater in one kind of classical methods using air instead of water condensation condensation Determination of Chemical oxygen demand of the heating reflux device, it uses the new thermostat, heating speed, a constant uniform temperature characteristics, easy to operate , is a means of instrumented test new products. Measured with the current addition of dichromate reflux device compared to the chemical oxygen demand, the instrument has power, small size, water, temperature performance, easy operation. Can be widely used in medicine, health, paper, food, water, chemicals, sewage treatment, petrochemical, metallurgy, printing and dyeing, water quality monitoring institutions and other industries. 
 Performance characteristics of energy-saving, small size, easy to operate, saving water, temperature performance, low power consumption, heating speed. 
 Technical parameters of the scope of the main parameters 
 Adjustable temperature range of 32 ℃ ~ 399 ℃ 
 Temperature accuracy of 2 ℃ 
 Heating time (180 ℃) <30min 
 While heating the sample number 12 heating holes (can be customized according to customer needs) 
 Power AC220V ± 10% 50HZ 

 With time setting function: 120min arbitrarily set 

 6 16 heating holes that we are the exclusive production of another 12 homes can also be produced