A full-automatic rapid chemical oxygen demand measuring instrument
The fully automated rapid chemical oxygen demand (COD) analyzer utilizes a multi-functional transfer and detection mechanism, which solves the problems of unstable test tube fixation and complex equipment, thereby achieving automation and precision in COD measurement and improving detection accuracy and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO RANNUO SCI INSTR CO LTD
- Filing Date
- 2026-05-13
- Publication Date
- 2026-06-16
AI Technical Summary
In the colorimetric detection process, the test tubes of the existing fully automatic rapid chemical oxygen demand analyzer are not fixed stably, which prevents the incident light from passing perpendicularly through the effective optical path of the cuvette, affecting the accuracy and repeatability of absorbance measurement. In addition, the device has a complex structure and is cumbersome to install and debug, making it difficult to guarantee stability and reliability in long-term use.
A fully automated rapid chemical oxygen demand (COD) analyzer was designed, employing a multi-functional transfer mechanism and a detection mechanism, including an aspiration component, a clamping and opening/closing component, an optical detection device, and a clamping component. This enables automated fixation and precise alignment of test tubes, while multi-axis movement and a flexible clamping structure ensure the stability of the test tubes during the colorimetric detection process.
The entire process of chemical oxygen demand (COD) determination has been automated, improving detection accuracy and efficiency, ensuring the stability and repeatability of the optical path for absorbance measurement, reducing human error, and improving the precision of the measured values.
Smart Images

Figure CN224365970U_ABST