ZHK6250 Fully Automatic BOD Analyzer

The ZHK6250 Fully Automatic BOD Analyzer is an automat-ed detection instrument suitable for measuring biochemical oxygen demand in surface water, domestic sewage, and industrial wastewater. 

The entire instrument adopts an integrated structural design with a simple and elegant appearance, featuring up to 132 sample positions to meet the daily analysis needs of various laboratories. It utilizes an import-ed electrochemical dissolved oxygen electrode combined with advanced adaptive compensation algorithms to ensure that measure-ment results are accurate and reliable. With a one-button start feature, the instrument automatically completes a series of complex processes including dilution water preparation, sample dilution, constant tempera-ture and oxygen maintenance, cultivation, calibration, and measure-ment, significantly saving labor and improving work efficiency. The intelligent workstation software provides real-time feedback on the instrument's operational status, making the progress of experiments clear at a glance.

Main Features 

● Automatic preparation and stirring of dilution water throughout the entire process.
● Automatic sample dilution, constant temperature and oxygen maintenance, automatic cultivation, automatic BOD value calculation, and test report generation.
● Automatic calibration, measurement, and cleaning of the dissolved oxygen electrode, with automatic power-off during standby to extend electrode lifespan.
● Supports remote control of the instrument via a mobile phone.

Efficiency

● Dual constant temperature zone design with two independent temperature control systems that coordinate  cooling and heating, ensuring a stable temperature at 20°C.
● 60 measurement positions for samples and up to 132 cultivation positions for samples, supporting offline cultivation to meet large-scale analysis needs.
● Supports multiple modes for non-dilution, non-dilution inoculation, dilution, and dilution inoculation methods.
● Supports multiple batches of automatic operation and allows for sample addition during the process.

Accuracy

● Utilizes globally leading YSI electrochemical dissolved oxygen electrodes (fluorescent electrodes are optional),  supporting compensation for tempera-ture, pressure, and salinity.
● All reagents are added through high-precision injection pumps to ensure accurate liquid dispens-ing.
● Unique bottle cap temporary storage technology guarantees that samples have sufficient equilibration time after aeration, yielding more accurate and reliable measurement data.
● Employs comprehensive spraying cleaning technology to ensure no cross-contamination during the experi-mental process, making it safer and more reliable.

Safety

● Alarms for empty sample positions, lid opening failures, cap drop, and robotic arm collisions to ensure operational safety.
● Alarms for reagent line blockages, rotary valve misalignment, and insufficient reagent levels.
● Alarms for abnormal temperatures in the constant temperature chamber, temperature sensor malfunc-tions, and dual temperature sensors to protect experi-mental safety.