Overview
COD-MP COD analyzer is a precision instrument for measuring chemical oxygen demand of water. The instrument adopts high-performance Optical inspection system and intelligent temperature control digestion technology, easy to operate, stable and reliable data, suitable for laboratory and field water quality analysis.
Features
1. Imported High Performance, Long Life Illuminant, with High Stability Optical inspection system, High Repeatability of Instrument.
2. The temperature of the digestion instrument adopts PID automatic temperature control and timing, with high accuracy.
3. The operation is simple and time-saving, and there is no need to replace the Colorimetric tube during the digestion process.
4. The digestion temperature and time can be set steplessly, expanding the application range of the instrument.
5. Can save 10 standard Linear dispersion and 500 measured values, power-off data is not lost.
6. Adopt LCD large-screen LCD Chinese display, easy and intuitive to operate.
7. With printing function, the test record can be printed immediately or after query.
8. Equipped with a USB interface, it can be connected to a computer for data transmission.
Principle
The instrument is based on the determination of chemical oxygen demand (COD) by the potassium dichromate method. The water sample is oxidized by potassium dichromate under strong acid medium and high temperature digestion conditions, and the amount of potassium dichromate consumed is proportional to the COD value of the water sample. The instrument calculates the COD concentration of the water sample by measuring the change (Absorbance) of the reaction solution at a specific wavelength.
Applications
Environment monitoring, sewage treatment, chemical production, scientific research and education, municipal water affairs
Standards
GB 11914-89 "Water quality, determination of chemical oxygen demand, dichromate method"
Steps
1. Prepare water samples and pretreat them.
2. Add the Water Sample and Digestion Reagent to the Digestion Colorimetric Tube.
3. Put the Colorimetric tube into the digestion instrument and set the digestion temperature and time (e.g. 100 ° C, 30 minutes) for digestion.
4. Colorimetric tube chilled down to room temperature after digestion.
5. Colorimetric tube into the meter, Colorimetric measurement.
6. The instrument automatically calculates and displays the COD concentration value.
7. You can choose to save the data or print the results.
Notice
• The instrument should work at an Ambient Temperature of 5~ 40 ° C and a relative humidity of ≤ 85%.
• Power Supply is AC (220 +/- 22) V, (50 +/- 0.5) Hz.
• The temperature is high during the digestion process, please pay attention to prevent burns.
• Colorimetric tube outer wall clean and drying before measurement.
• When using corrosion Reagents, please take good personal protection.
Periodically calibrated to ensure measurement accuracy.
Measurement range of the instrument is 0~ 10mg/L, and the minimum detection limit is 0.20mg/L.
