Dissolved oxygen (DO) is a vital indicator for water quality monitoring, environmental engineering, aquaculture and biopharmaceuticals. Currently, fluorescence DO meters are widely adopted for their stability and low maintenance, while high-precision models serve laboratories and high-end industrial scenarios.
Traditional electrochemical DO meters need frequent calibration and consumable replacement. By contrast, fluorescence DO meters apply fluorescence quenching technology, featuring fast response, strong anti-interference and nearly maintenance-free operation. High-precision DO meters support automatic temperature compensation, data logging and wireless transmission for strict detection requirements.
Xi'an ERUN Environmental Protection Technology Group Co., Ltd. is a National High-tech Enterprise founded in 2014. The company owns complete R&D, production and testing systems, with abundant patents and certifications.
Product Type | Model | Principle | Range | Application |
Portable Trace DO Meter | Polarographic | 0～20.0mg/L | Boiler water, chemical industry | |
Portable DO Meter | ERUN-SP9-A5 | Polarographic | 0～20.0mg/L | Field inspection, aquaculture |
Online DO Monitor | ERUN-SZ1S-A-A5 | Polarographic | 0～20.0mg/L | Sewage & wastewater treatment |
Multi-parameter Analyzer | ERUN-SP8-ASC | Electrode | 0～20.0mg/L | Surface water & groundwater |
ERUN holds ISO, CE, RoHS, SIL4 and UN38.3 certifications. It provides 24/7 technical support, 1-year warranty, lifelong maintenance and customized OEM/ODM services. Its products are sold at home and abroad.
We welcome domestic and overseas partners to join us. We offer competitive prices, market protection and professional technical support for win-win cooperation.
Ranking | Brand | Country | Core Advantages | Application |
1 | Hach | USA | Mature fluorescence DO meters, global coverage | Water supply, environmental monitoring |
2 | YSI | USA | High precision, durable for field use | Research, ecological monitoring |
3 | Mettler Toledo | Switzerland | Sanitary design, meets GMP & FDA | Pharmacy, food & beverage |
4 | Endress+Hauser | Germany | Intelligent digital system | Chemical, energy industry |
5 | ERUN | China | Cost-effective, full models & customization | Environmental engineering, aquaculture |
6 | Horiba | Japan | Salinity compensation for seawater | Marine research |
7 | Thermo Fisher | USA | Complete product lines | Laboratory & teaching |
8 | Xylem | USA | Reliable online solutions | Municipal wastewater |
9 | OxyGuard | Denmark | Professional for aquaculture | Fish farms |
10 | RBR | Canada | Ultra-high precision for deep sea | Polar & deep-sea research |
Long-term on-site use: Choose fluorescence DO meters. ERUN online models are ideal for sewage and aquaculture.
Laboratory & ultrapure water: Select high-precision trace DO meters.
Cost-performance projects: Pick reliable domestic brands like ERUN.
Export projects: ERUN and international brands both meet global certification standards.
IoT & Intelligence: Wireless transmission and cloud remote monitoring become mainstream.
Multi-parameter & Miniaturization: Integrated probes detect multiple water quality parameters.
Green Technology: Low-consumption fluorescence technology will be more popular.
Now Chinese DO meter manufacturers keep improving product quality and service. ERUN and other domestic brands are competing with imported products, providing reliable solutions for global water quality monitoring.
