A Trusted Assistant for Full-Coverage Field Testing of Lakes and Reservoirs

In the management of water quality in lakes and reservoirs, monitoring chlorine dioxide (ClO₂) is a task that cannot be overlooked. As a highly effective, broad-spectrum disinfectant and oxidant, chlorine dioxide is widely used in drinking water source protection, aquaculture disease prevention and control, and emergency treatment of eutrophic waters. 

However, chlorine dioxide is chemically active and decomposes readily; once a sample is collected, its concentration changes significantly over time if not measured promptly. Consequently, full-coverage testing in field lake and reservoir environments demands portable equipment capable of on-site, real-time measurement. The portable chlorine dioxide detector is precisely the ideal tool to meet this need.

Technical Principle: A Foundation for Reliability

Most portable chlorine dioxide detectors employ photoelectric colorimetry as their core detection principle. This method relies on a specific reaction between chlorine dioxide and a chromogenic reagent. Under controlled pH conditions, chlorine dioxide oxidizes N,N-diethyl-p-phenylenediamine (DPD) to form a red compound, which exhibits characteristic absorption at a specific wavelength (typically 515 nm or 525 nm). 

A built-in cold light source emits a stable beam through the sample solution, and a photoelectric sensor converts the light attenuation into an electrical signal. A microprocessor then calculates and directly displays the chlorine dioxide concentration. This principle offers high sensitivity, excellent repeatability, and strong anti-interference capability. High-precision instruments can achieve a resolution of 0.001 mg/L and accurately distinguish chlorine dioxide from other interfering substances.

Portable Design Tailored for Field Environments

Full-coverage testing of lakes and reservoirs typically involves large water areas, numerous sampling points, and complex terrain—all of which place high demands on the portability of testing equipment. Portable chlorine dioxide detectors are designed with these field requirements fully in mind. The instruments are compact; mainstream models measure approximately 190×77×72 mm and weigh only about 325 g. The complete system is packaged in a portable protective case for easy transport and storage. 

In terms of power supply, a built-in high-capacity lithium battery (typically 5600 mAh) supports approximately 8 hours of continuous operation, and the AC/DC dual-use design further ensures sustained work capability even without access to external power sources. Moreover, most instruments feature IP67-rated dust and water resistance along with shockproof structures, making them capable of performing reliably in harsh field conditions.