Overview
COD-572 chemical oxygen demand analyzer is a device for measurement by coulometric titration method, which can determine CODCr and CODMn (permanganate index). The instrument is simple and fast to operate, and the amount of Reagent is small. It is suitable for the determination of CODCr in surface water samples with low COD content and CODMn in tap water and other samples.
Features
1. LCD liquid crystal display, Chinese menu, easy to operate;
2. Using the Coulomb Titrimetric method, no standard titration solution is required, and iron sulfate does not need to be calibrated;
3. Three-speed electrolysis current optional: 10mA, 20mA, 40mA;
4. COD Measured value can be displayed directly without user calculation;
5. Allows storage of COD calibration values of 10 different master standard volumes of manganese method and chromium method, which is convenient for users to call;
6. With data management function, support data access, deletion and printing, the maximum storage capacity of manganese method and chromium method each 200 COD Measured value;
7. With standard USB Communication interface, it can be connected to PC.
Principle
The instrument is based on the Coulomb Titrimetric method for the measurement of chemical oxygen demand through an electrolysis process without the use of standard titration solutions.
Applications
Surface water, tap water
Steps
1. Select electrolysis current gear (10mA, 20mA or 40mA);
2. Call the stored calibration value (manganese method or chromium method);
3. Carry out measurement, the instrument directly displays the COD value;
4. Use data management functions to access, delete, or print data.
5. Connect the PC through the USB interface for data transmission.
Notice
- The instrument power supply is AC (220 +/- 22) V, (50 +/- 1) Hz, please ensure that the voltage and Frequency meet the requirements;
- Measurement range (0.0~ 100.0) mg/L, can be extended to (100.0~ 1000) mg/L, note that the intrinsic error does not exceed +/- 2 mg/L;
- Repeatability should be ≤ +/- 2%, and attention should be paid to the operating specifications when using it;
- Measured values of up to 200 for each of the Manganese and Chromium methods when storing data to avoid exceeding the limit;
When using the USB port to connect to the PC, ensure a stable connection.
