CODMn online automatic water quality analyzer TCU/COD3260

measuring principle

Add a known amount of potassium permanganate and sulfuric acid to the sample, heat and digest at around 100 ℃, and potassium permanganate will

Some organic and inorganic reducing substances in the sample are oxidized, and excess sodium oxalate is added for reduction after the reaction

The remaining potassium permanganate is then dripped back with excess sodium oxalate using potassium permanganate standard solution (via a dual platinum electrode)

Determine the endpoint, calculate the amount of potassium permanganate consumed by the reducing substances in the sample, and thus calculate

The permanganate index of the sample.

Typical applications

Online monitoring of CODMn in surface water and drinking water.

Performance advantages

Dual platinum electrodes, stable and durable

• Instrument miniaturization, more flexible installation

The reagent compartment is independent, making it convenient for storing and replacing reagents

Adopting negative pressure suction method, the peristaltic pump tube has no contact with reagents and water samples, greatly extending its service life

Modular assembly, easy and fast disassembly and maintenance

High integration, simple wiring, circuit board protection, more stable performance, and stronger environmental tolerance

Low operating costs and minimal secondary pollution