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The components to be tested in the water sample react with the digestion reagent to generate substances of different colors through digestion. The analyzer detects the color change of the generated substances and calculates the corresponding components to be tested within the range of Beer's law.

1. Adopting GB/T7467-87 "Water Quality - Determination of Hexavalent Chromium - Diphenylcarbazide spectrophotometric method";

2. GB/T7466-87 "Water Quality - Determination of Total Chromium";

3. The intelligent fault self diagnosis function makes instrument management and maintenance very convenient;

4. Equipped with automatic range switching function, no manual setting required;

5. Equipped with reverse control function, the instrument can be remotely controlled through central control, increasing operational convenience;

6. Sampling methods such as timing, interval, and telemetry can be set;

7. After abnormal reset and power outage, the instrument will discharge residual reactants and automatically restore working status when powered on;

8. Suitable for process detection of surface water, groundwater, sewage, etc;

9. Having network functionality, remote control of data can be achieved through the network;

10. Sequential injection analysis method has a simple flow path, low reagent consumption, and high degree of automation;

11. Adopting multi-channel valves, it has strong anti-corrosion performance, long service life, and is safe and reliable.