Background of the Proposal

HJ 828-2017 specifies the determination of chemical oxygen demand (CODcr) in water quality using the dichromate method, which is applicable for the determination of chemical oxygen demand in surface water, domestic sewage, and industrial wastewater. The CODcr project is an important high-frequency testing project for various levels of environmental monitoring departments, third-party environmental testing institutions, sewage/wastewater discharge and treatment enterprises, and other related testing units.

The traditional manual detection and liquid addition process is cumbersome, with high labor intensity for personnel. During sample digestion, errors in the measurement results may occur due to boiling or uneven heating, and the titration process is time-consuming and laborious. In the case of large sample batches, the overall work efficiency is relatively low, and it is difficult to ensure the pass rate of detection data.

Product Features

The Dehe Chuangrui 16 bit CODcr detection solution is a combination of Dehe Chuangrui DH2160 intelligent high-temperature condensation reflux extractor and iCR2160 (16 bit fully automatic titration analyzer), combined with iCR2160's built-in precision liquid addition expansion module and Dehe Chuangrui's large volume quantitative liquid addition module, to form a CODcr detection solution that complies with the HJ 828-2017 standard process.

DH2160+iCR2160 can efficiently meet the needs of large-scale sample testing, while processing and analyzing 16 samples. Under the guidance of standard SOP, the four modules operate continuously in a coordinated cycle, ensuring accurate and reliable detection data, significantly improving work efficiency, and outstanding cost-effectiveness.

Applicable standard(Only displaying some standards)

HJ 828-2017 Determination of Chemical Oxygen Demand in Water Quality - Dichromate Method