Using 515nm LED light source, long life and high precision;

Using high-performance low-power single-chip technology, good human-machine interface;

Support single-point and multi-point calibration, support users to edit the calibration curve;

Supports a total of 200 sets of test data for two parameters, in line with GLP specifications;

Support battery power supply, support power management function;

IP65 protection grade, good waterproof and dustproof performance.

DGB-402A portable residual chlorine/total chlorine tester is designed and developed based on the DPD colorimetric method. It can directly measure residual chlorine and total chlorine in water. It is convenient, accurate and reliable. This method is the national standard for the determination of residual chlorine and total chlorine in the field of water quality analysis. The method is widely used in the determination of residual chlorine and total chlorine content in drinking water, landscape water, medical wastewater, swimming pool water, disinfectant and other samples.