Hangzhou Qiwei Instrument Co., Ltd. is one of the leading manufacturers and suppliers of benchtop dissolved oxygen meter in China. With a professional production team, we are able to meet the needs of the majority of our customers. Welcome to wholesale bulk benchtop dissolved oxygen meter in stock here from our factory. We also accept customized orders.
product key technologies
The QW-Lab Benchtop Dissolved Oxygen Meter is intended for precise dissolved oxygen measurement in laboratory research applications, aquaculture, environmental monitoring, and water quality analysis.
For professional customers who need high accuracy and long-term measurement reliability, this benchtop DO meter offers stable and repeatable oxygen measurements thanks to its sophisticated dissolved oxygen calibration technology, automatic temperature compensation, and dependable data management features.
Fish farming water quality control, scientific investigations, wastewater analysis, and laboratory quality testing can all benefit from the instrument's ability to monitor dissolved oxygen in mg/L, ppm, and % saturation modes.
Important uses consist of:
• Monitoring of dissolved oxygen in aquaculture
• Scientific experiments and laboratory research
• Analysis of environmental water
• Testing for wastewater treatment
• Laboratories for education and water quality inspection
This Benchtop Dissolved Oxygen Meter is a precision analytical instrument dedicated to laboratory and water quality detection. It is mainly used for the accurate determination of dissolved oxygen content in various aqueous solutions, meeting routine testing demands in scientific research, environmental monitoring, industrial water treatment, aquaculture and other industries.
Dissolved oxygen in water is an important physical and chemical indicator for water quality evaluation with multiple sources. In nature, oxygen in the atmosphere dissolves into water through natural gas-liquid interface permeation. Water flow, air convection and other dynamic airflow effects can further accelerate the oxygen dissolution rate. Meanwhile, oxygen released by aquatic plants and plankton during photosynthesis continuously supplements dissolved oxygen in water, forming the main supply sources of dissolved oxygen in natural water bodies.
This benchtop dissolved oxygen meter features stable and reliable performance, high detection sensitivity and excellent measurement repeatability. Adopting a stable bench-top structure, it is suitable for long-term fixed placement in laboratories, ideal for daily batch water sample testing and routine water quality monitoring.
With simple and user-friendly operation logic, it requires no complicated debugging and allows quick start-up. The instrument can rapidly and accurately capture real-time dissolved oxygen values of water samples, providing accurate and reliable data support for water quality assessment, process regulation and ecological water maintenance. It is an essential conventional physical and chemical analytical instrument for laboratories and testing institutions.
Feature
- Dot-matrix backlit liquid crystal display;
- Automatic temperature compensation, fast response time;
- Equipped with our factory's dissolved oxygen electrode (galvanic type coated membrane type)
Dissolved Oxygen Calibration Guide: 1-Point and 2-Point Calibration
Reliable dissolved oxygen measurement requires accurate calibration.
Flexible 1-point and 2-point calibration techniques are supported by the QW-Lab Benchtop DO Meter to preserve measurement accuracy in a variety of testing scenarios.
Air calibration, or 1-point calibration
Suggested for regular measurement in the lab.
Procedure for calibration:
Step 1: Put the dissolved oxygen probe in a calibration environment or water that has been saturated with air.
Step 2: Give the probe reading time to stabilize.
Step 3: After choosing the calibration function, the automatic calibration process is finished.
Step 4: The calibration value is automatically adjusted by the meter based on atmospheric oxygen levels.
Benefits:
• Quick daily calibration
• Easy to use
• Fit for regular laboratory testing and aquaculture
Two-Point Calibration (Air Saturation + Zero Oxygen)
Suggested for applications needing increased measurement confidence and excellent accuracy.
Procedure for calibration:
Step 1: Use an oxygen-free calibration solution to perform zero oxygen calibration.
Step 2: Calibrate the air saturation.
Step 3: Electrode slope and offset are automatically calculated by the meter.
Step 4: The calibration results are saved for use in subsequent measurements.
Benefits
• Increases the precision of measurements
• Offsets the effects of sensor aging
• Fit for quality control applications and research labs
Assurance of Calibration Accuracy
The accuracy of the dissolved oxygen measurement is preserved by:
• ATC, or automatic temperature compensation
• Adjustment for salinity compensation
• Compensation for barometric pressure
• An algorithm for stable electrode calibration
• Management of calibration reminders
For ongoing laboratory and aquaculture testing, this guaranties accurate dissolved oxygen data.
GLP Compliant Data Management for Laboratory Traceability
To assist laboratories in keeping precise measurement records and enhancing data traceability, the QW-Lab Benchtop Dissolved Oxygen Meter includes GLP (Good Laboratory Practice) data management features.
Important measurement data can be recorded by the system, such as:
• Value of measurement
• Date and status of calibration
• Time spent measuring
• Details about temperature
• Parameters of dissolved oxygen
• Records of operator testing (if supported)
Users may simply inspect, transfer, and analyze measurement findings for laboratory documentation and quality control reasons thanks to internal data storage and data export capabilities.
Advantages of GLP data management
Enhanced laboratory compliance; simpler audit preparation; comprehensive tracking of measurement history; less errors in manual recording; and improved administration of research data
Perfect for:
• Laboratories at universities
• Research facilities
• R&D facilities for aquaculture
• Laboratories for environmental testing
• Departments of industrial quality control
Technical parameters
|
Model |
JPB-650 |
|
Measuring range |
(0~19.99) mg/L |
|
Temperature |
(0~40) °C |
|
Basic error |
±0.3 mg/L |
|
Temperature fluctuation |
±1°C |
|
Automatic temperature compensation range |
(0~40) °C |
|
Power supply |
220V 50Hz |
|
Size |
230x200x80mm |
|
Weight |
1.5kg |
|
Response time |
No more than 30s (90% response at 20°C) |
Frequently Asked Questions About Benchtop DO Meter
1.What is the purpose of a tabletop dissolved oxygen meter?
Aquaculture, laboratory research, environmental testing, and wastewater analysis all use benchtop dissolved oxygen meters to quantify the amount of oxygen in water samples.
2.What is the recommended frequency of calibration for a dissolved oxygen meter?
Usage conditions determine the frequency of calibration. Regular calibration prior to measurement is advised for applications requiring high accuracy.
3.What distinguishes 1-point DO calibration from 2-point DO calibration?
While 2-point calibration improves accuracy by calibrating both zero oxygen and air saturation points, 1-point calibration offers quick routine adjustment.
4.Is aquaculture a good fit for this benchtop DO meter?
Indeed. The meter is intended for monitoring dissolved oxygen in aquaculture settings, where oxygen levels have a direct impact on the growth of aquatic organisms and the control of water quality.
5.Is GLP data management supported by the DO meter?
The device facilitates data management and recording features intended for laboratory traceability and quality control needs.
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