Chemical-free COD Analyser

The on-line COD analyser QuickCODultra of LAR Process Analysers AG determines the chemical oxygen demand (COD) in water. Using a robotic, horizontally and vertically moving injection needle, the sample is transported to the furnace. Due to the robust needle samples with a high particle density will be easily injected to the furnace. Thus, operators do not need any sample preparation such as filtration. The COD analyser works with the high temperature combustion method at 1200 °C. At this temperature, the complete oxidation of all compounds is guaranteed. Due to the high oxidation potential of the 1200 °C no oxidation-promoting catalysts or hazardous chemicals are needed. As a result, the cost of ownership are minimised. Moreover, the measurement results are free of chloride interferences. The amount of oxygen needed is detected by an oxygen detector. The determination of the chemical oxygen demand takes place in less than 2 minutes.

Using the multi-stream option LAR's QuickCODultra measures up to 6 sample streams in one unit. The COD analyser is optimally suitable for the detection of production losses in chemical and food industries as well as for control of waste water treatment plants.