Overview
The LEICI COD-571 Chemical Oxygen Demand Meter is a professional instrument for detecting chemical oxygen demand (COD) in water. It supports low-concentration and high-concentration COD measurement. It uses potassium dichromate method and has High Accuracy measurement, intelligent data processing and multiple interface functions.
Features
1. Adopt high definition color LCD screen, display clearly
2. Use 420nm and 620nm two LED Illuminants, long life and high accuracy
3. Built-in high concentration and low concentration COD Measuring method
4. Intelligent determination of endpoints, support for automatic and continuous readings
5. Set the dilution ratio and automatically calculate the original concentration of the sample
6. Optional built-in calibrated Linear dispersion or custom calibrated Linear dispersion
7. High COD supports 1~ 5 point calibrating, low COD supports 2~ 5 point calibrating
8. Support recalibration of a certain calibration point
9. 2000 sets of data storage capacity, support access, deletion, transmission and printing
10. Compliant with GLP standards for data traceability
11. Built-in small printer, can automatically print, print format optional
12. Support U disk data export
13. With RS-232 and USB interfaces, data can be transferred through dedicated software and PC connection
14. Support power failure protection and factory reset function
Principle
The instrument is based on the potassium dichromate method for measurement of chemical oxygen demand, detects sample Absorbance at 420nm and 620nm wavelengths through LED Illuminant, intelligently determines the reaction endpoint, automatically calculates the concentration, and uses calibrated Linear dispersion to ensure measurement accuracy.
Applications
Water quality monitoring, environment testing, industrial wastewater treatment, laboratory analysis
Steps
1. Prepare the sample and perform digestion treatment
2. Measuring method (high concentration or low concentration COD)
3. Set diluted ratio (if necessary)
4. Use calibrated Linear dispersion to calibrate
5. Place the sample in the measurement cell (10mm Cuvette or 16mm Colorimetric tube)
6. Start the measurement, the instrument automatically reads and calculates the concentration
7. View, store, or print data
8. Optional U disk export or transfer data through the interface
Notice
• Samples need to be digested before measurement
• Ensure the correct wavelength is used (470nm for low concentration COD and 620nm for high concentration COD)
Periodically calibrate instruments to maintain accuracy
• Data storage capacity of 2000 groups, timely export to avoid overflow
• Use the specified Power Adapter, input AC 100~ 240V, output DC24V
• Pay attention to Instrument Stability during operation to avoid violent vibration
