KNF-501A COD analyzer, COD measuring instrument, COD detection instrument, COD analyzer

KNF-501A COD analyzer, COD measuring instrument, COD detection instrument, COD analyzer

KNF-501A typeCOD analyzer, COD analyzer, COD detector, COD analyzerThe equipment launched by Kenafu Technology is mainly used for online monitoring of water quality COD in surface water, groundwater, drinking water sources, river sections, and other occasions. It adopts independent specialized technology and specially designed "automatic sampling and dose measurement technology" and optimized reagent formula, combined with "background absorption and turbidity calibration" technology, which greatly improves the sensitivity and stability of measurement. Compared with the "spectrophotometric method" used in the "potentiometric titration method", the measurement principle is more stable, easy to maintain, and the cost of operation and maintenance is lower.

KNF-501COD analyzer, COD measuring instrument, COD detection instrument, COD analyzerThe working principle adopts potassium permanganate digestion and spectrophotometry technology. Under acidic and alkaline heating conditions, potassium permanganate oxidizes certain organic and inorganic reducing substances in the sample. After the reaction, excess sodium oxalate is added to reduce the remaining potassium permanganate, and then a known amount of potassium permanganate standard solution is added to oxidize the remaining sodium oxalate; Measure the absorbance of residual potassium permanganate at a wavelength of 525nm and convert it into the corresponding permanganate index.

KNF-501COD analyzer, COD measuring instrument, COD detection instrument, COD analyzerTechnical Indicators:

1Measurement range:0-5mg/L, Or 0-20mg/L

2Measurement accuracy:±3%

3repetitiveness ：≦0.6%

4Zero drift:±0.5%F.S

5. Measurement lower limit: ≤ 0.4mg/L

6Actual water sample comparison test:±5%