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

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

Support calibration-free measurement, direct reading of measurement results, automatic lock reading

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

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

Support USB communication, support to connect to PC for data collection;

Support battery power supply and USB power supply, support power management function, can be set to automatically turn off the light source and automatic shutdown;

IP65 protection level, good waterproof and dustproof performance;

Support firmware upgrade, allowing function expansion and application expansion.

DGB-402F portable residual chlorine chlorine dioxide tester is designed and developed based on the DPD colorimetric method. It can directly measure residual chlorine, total chlorine and chlorine dioxide in water. It is easy to use, accurate and reliable. This method complies with the national standards for determining relevant indicators in the field of water quality analysis, and is widely used in the determination of residual chlorine, total chlorine and chlorine dioxide in samples of drinking water, landscape water, medical wastewater, swimming pool water, and disinfectants.