COD is the abbreviation of chemical oxygen demand, which uses chemical oxidants (such as potassium permanganate) to oxidize and decompose oxidizable substances in water (such as organic matter, nitrite, ferrous salts, sulfides, etc.), and then calculates the oxygen consumption according to the amount of residual oxidant. Like biochemical oxygen demand (BOD), it is an important indicator of water pollution. COD is measured in ppm or milligram liters, and the lower its value, the less polluted the water is.
The COD tester is composed of a first-class digester and a special colorimeter, with automatic temperature control, timing zeroing, linear regression, curve storage and data printing functions, good stability, high accuracy, wide measurement range, and in practicability and convenience compared with the previous COD tester have been greatly improved.
COD Tester Features:
01) Rapid and accurate determination of chemical oxygen demand in surface water, reclaimed water, municipal sewage and industrial wastewater, and the concentration is directly read;
02) Cold light source, narrowband interference, light source life of 100,000 hours;
03) Support both cuvette colorimetric and cuvette colorimetric methods;
04) Support historical data storage, can store 4000 data (date, time, parameters, measurement results);
05) 5 standard curves in memory7, no need to adjust, can be used directly, 94 extended curves can be freely applied under different personnel, different environments, different wastewater and other conditions;
06) Support curve auto-correction and auto-save.
COD tester is designed and manufactured for the laboratory to determine the COD content of water, COD tester is divided into **COD tester and laboratory COD tester, generally speaking, the laboratory to determine COD instrument is called COD tester, and the first is called COD analyzer.
Laboratory: Laboratory COD tester, generally on-site sampling, and then taken to the laboratory for sampling testing, such as: "TR-108 COD tester.""。There is also a portable COD tester, which is generally used in small and medium-sized enterprises, and is also suitable for sewage treatment plants to measure and use in sewage treatment, if you are interested, you can search for it.
*:* COD tester is generally installed at the sewage treatment site, according to the instrument measurement cycle (about half an hour for each sample measured by the COD tester) to automatically sample and measure the sewage, and upload the measurement data to the computer monitoring terminal and the relevant national environmental protection departments in real time, which plays the role of real-time monitoring.