CODmax II potassium dichromate COD rapid analyzer

-Product Overview:

The CODmax II potassium dichromate COD rapid analyzer can be used to determine COD based on the potassium dichromate method (in accordance with the national standard GB11914-90). This sewage COD rapid analyzer has stable performance and low maintenance.

-Working principle:

The principle of using potassium dichromate method to determine COD is as follows: a mixture of water sample, potassium dichromate, silver sulfate solution (catalyst promotes more complete oxidation of linear aromatic compounds), and concentrated sulfuric acid is heated to 175 ℃ in a digestion tank. During this period, chromium ions act as oxidants and are reduced from VI valence to III valence, resulting in a change in color. The degree of color change corresponds to the content of organic compounds in the sample, and the instrument directly displays the COD of the sample through colorimetric conversion. The main interferent in COD detection of wastewater using CODmax II potassium dichromate COD rapid analyzer is chloride, which can be removed by adding mercuric sulfate to form a complex.

-Application industry:

The CODmax II potassium dichromate COD rapid analyzer can be used for COD detection in various fields such as pollution source wastewater discharge outlets, municipal wastewater inlet and outlet outlets, and industrial wastewater discharge outlets.

-Instrument features:

The combination of classic potassium dichromate oxidation method and new testing technology enables the CODmax II potassium dichromate COD rapid analyzer to automatically calculate COD values during wastewater COD detection.

The integrated design of digestion and measurement simplifies and speeds up COD determination.

The CODmax II potassium dichromate COD rapid measuring instrument adopts advanced piston pump technology and corrosion-resistant pipeline design, with high measurement accuracy and minimal manual maintenance.

● It has a self leakage monitoring function. When there is a leakage in the system pipeline, its humidity sensor immediately stops working and alarms to ensure the safety of personnel and the environment.

Equipped with self diagnostic function, it can continuously monitor the operating status of the system, allowing users to understand the working condition of the instrument at any time, and better avoid generating erroneous test results.

Equipped with automatic calibration function, ensuring that the instrument can measure more accurately.

Equipped with automatic cleaning function, it automatically cleans after each test to ensure more accurate measurements and reduce manual maintenance.

Featuring a user-friendly safety protection panel design, the panel can only be removed when the instrument is stopped.