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This section provides an overview for dissolved oxygen meters as well as their applications and principles. Also, please take a look at the list of 27 dissolved oxygen meter manufacturers and their company rankings. Here are the top-ranked dissolved oxygen meter companies as of December, 2024: 1.Traceable(R), 2.Omega Engineering, Inc., 3.YSI Inc..
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Categories Related to Dissolved Oxygen Meters
A Dissolved Oxygen (DO) meter is a device used to measure the concentration of dissolved oxygen in water.
There are two methods of testing: chemical analysis, which uses the behavior of oxygen as an oxidant, and electrochemical analysis, which uses the properties of the current-carrying capacity and fluorescence intensity between electrodes, which vary with the partial pressure of oxygen and the concentration of dissolved oxygen. The electrochemical method is used as the measurement method for most common products.
DO meters are used for water quality and environmental inspections of rivers, lakes, oceans, well water, etc., measurement of dissolved oxygen concentration in biological reaction tanks at sewage treatment facilities, measurement of oxygen concentration in tanks at fish aquaculture facilities, measurement of oxygen concentration in factory effluent, etc. The measurement method, accuracy, and size of the liquid to be treated must be taken into consideration when selecting a DO meter.
If the measurement unit is to be thrown into water, such as a river, it is important to consider the length and strength of the cable. In addition, some products can simultaneously measure not only dissolved oxygen concentration but also pH, etc. Therefore, selection must be made according to the intended use.
DO meters are generally based on electrochemical measurement methods using electrodes, which can be divided into two types: fluorescent and diaphragmatic.
Fluorescent DO meters consist of a fluorescent substance, an excitation light source, and a light-receiving part, where the fluorescent substance is in contact with the liquid to be measured. To measure dissolved oxygen, the fluorescence emitted by the fluorescent material as it returns from the excited state to the ground state is reduced in intensity by oxygen.
Compared to the diaphragm DO meter, the electrode can be used for a longer period of time.
The diaphragm DO meter consists of two electrodes and an ammeter. A diaphragm made of Teflon or similar material is attached to one side of the electrodes. The measurement is based on the property of the current-carrying capacity between the electrodes to change with oxygen concentration and partial pressure of oxygen. Diaphragm DO meters are characterized by their ability to make highly reproducible measurements without being affected by pH concentration, impurities, or color in the water.
Select a DO meter with a measurement range that matches the dissolved oxygen concentration range of the target water body. Typical DO meters cover a range from a few parts per million (ppm) to tens of ppm.
DO meters need to be calibrated periodically. It is important to make sure that calibration is easy to perform and that it is user-friendly.
It is important to select a DO meter that is rugged and waterproof for outdoor and underwater use.
It is important to select a DO meter with a long battery life if extended monitoring is required.
A data logging function allows measurement results to be recorded for later review. It is necessary to confirm that the required functionality is available for your application.
Water quality evaluation indicators using DO meters are divided into four levels:
DO (Dissolved Oxygen)
DO measures the amount of oxygen dissolved in water, or dissolved oxygen, to investigate water quality.
BOD (Biochemical Oxygen Demand)
BOD is a method of assessing the amount of oxygen, or biochemical oxygen demand, produced when microorganisms and bacteria break down organic matter in water. If there is an abundance of consumable organic matter in the water, microorganisms will use it as an energy source and reproduce in large numbers.
As the microorganisms multiply, the oxygen in the water is consumed by the microorganisms, and the increase in the number of microorganisms inhibits algae photosynthesis, resulting in an ever decreasing amount of residual oxygen.
COD (Chemical Oxygen Demand)
COD is an assessment method that uses a strong oxidant to oxidize organic matter in water and converts the amount of oxidant required into oxygen equivalents.
The oxidant used varies from case to case, but the general properties of the oxidant are consistent, so basically, the higher the COD value, the more polluted the water is.
*Including some distributors, etc.
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YSI, Yellow Springs Instruments is a manufacturer and supplier of water measurement solutions based in Ohio since 1948. The company produces a range of water measurement solutions such as Aquaculture Process Monitors, Sensors, Colorimeters, Photometers, Gas Chromatography Equipment, and more, catering to environmental surveillance, laboratory assessments, and industrial procedures, helping with measuring pH levels, dissolved oxygen, nitrate concentrations, algae presence, and various other parameters. They also encompass underwater and surface vehicles to facilitate surveys for industries like Aquaculture, Ocean and Coastal, Irrigational canals and Turnouts, and Ports and Harbors, The products also cater to Life sciences, Food and beverages, and more.
Hach Company, a subsidiary of Danaher Corporation (DHR), is an American manufacturer established in 1933 and headquartered in Loveland, Colorado, specializing in analytical instruments and reagents for testing water quality and other liquid solutions. Hach offers a diverse range of products, including chemicals, laboratory equipment and supplies, as well as portable and digital (online) instruments. Specific instruments like spectrophotometers, turbidimeters, and colorimeters are also available. These products are used for various applications, for example in analyzing industrial water to reduce fresh water consumption and validate contaminant removal, and monitoring nutrient for long-term water health using the Real Time Control (RTC) system.
OMEGA Engineering Inc., founded in Norwalk, CT, in 1962 is a manufacturer of products used to measure temperature and humidity, flow and level, and pressure. The company's product portfolio includes thermocouple probes and assemblies, pressure gauges and switches, and air velocity measurement systems, wireless systems and portable optic sensors. The company serves markets including Automotive and Electric Vehicles, Renewable Energy and Energy Storage and Electronics and IT Infrastructure. The company also offers customer services that include support, custom research projects and customized services.
Endress+Hauser Group Services AG, established in 1953 with headquarters in Reinach, Switzerland, is a global manufacturer, distributor, and integrator of industrial process solutions for flow, level, pressure, temperature, and digital communications. The company's product line includes portable pH meters, Raman spectroscopic analyzers, electromagnetic flowmeters, hydrostatic level sensors, and application managers (devices). These products are available individually, and custom-process manufacturing turnkey systems can be commissioned. The company serves industries including food processing, chemical processing, agriculture, mining, and energy.
Traceable was established in 1978 and is headquartered in Webster, Texas, US, as a manufacturer and designer of serialized, calibrated, and certified Traceable lab instruments. The product portfolio includes thermometers, barometers, hygrometers, manometers, controllers, timers, clocks, stopwatches, and lab tools. These products find applications in diverse fields, serving purposes such as temperature and atmospheric pressure measurement, humidity monitoring, pressure measurements, process control, timekeeping, and laboratory analysis. These products are utilized across various industries, including healthcare, laboratory, and industrial sectors, as well as in biopharmaceutical industries.
Hamilton Company is a US-based manufacturer of automation and laboratory equipment including process sensors, precision measuring devices, automated liquid handling workstations, and sample management systems. Hamilton's automation solutions include flexible automated liquid handling platforms and pre-configured Assay Ready workstations that are designed for specialized methods. They also offer small liquid handling devices for temperature control, plate sealing to protect microplate-based samples during critical stop points, and barcode reading. The company is also a supplier of laboratory products such as syringes and needles.
Myron L Company was founded in 1957 and is a manufacturer of water quality testing instruments in Carlsbad, California. The product line includes handheld and in-line conductivity, free chlorine equivalent (FCE) instruments, as well as Calibration solutions, buffers, and related accessories. Its products are used by professionals worldwide in water treatment, metal finishing, agriculture, aquaculture, printing, and hemodialysis applications. Its distributors are available in Australia, China, Egypt, Ireland, and other countries.
Sper Scientific, established in 1982, is a supplier of environmental measurement instruments, serving science and industry based in Scottsdale, Arizona, USA. The company specializes in instruments that are FDA approved, ensure EPA compliance, meet OSHA regulations, and measure diverse environmental parameters. It provides tools for maintaining regulatory standards and safer work environments for scientific applications in industries like Building Inspection, Environmental Quality, Food, Beverage, Refrigeration, Hygiene, Lab, Water Quality, Museum, Oil, and Gas. SPER's direct sales approach ensures product knowledge, customer service, technical support, and warranty fulfillment.
Shanghai Boqu Instrument Co., Ltd., established in 2007, is a manufacturer of electrochemical instrumentation and sensors, located in Shanghai, China. The company specializes in development and production of water quality analyzers and sensors, including water quality meters, dissolved oxygen meters, pH sensors, and more. With over 200 staff and engineers, and an annual production capacity of over 100,000 units, it ensures to provide quality products. Its products are exported to over 75 countries, demonstrating its global reach and influence in the field of water quality monitoring.
EIT Solutions Co. Ltd is based in Shanghai, China, and is a manufacturer of water quality monitoring products and equipment that was originally established as Shanghai Boqu Instrument Co. Ltd in 2007. The company’s product lineup includes dissolved oxygen and ORP water quality analyzers, flow meters for measuring how much media moves through a pipeline, and pressure sensors that assist in predictive maintenance operations. The company is ISO 14001, ISO 18001, and ISO/TS 16949-certified, and chiefly serves clients in industrial processing operations.
CLR Srl is an Italian ISO 9001:2015 certified optical systems and components manufacturer that was established in Milan in 1989. The company’s product portfolio includes various mirrors in various orientations, as well as prisms in different coatings and specifications. It also offers a wide range of spherical and aspherical lenses fabricated from various materials. The company’s products are commonly used in the production of laser systems, optical metrology products, and digital imaging products.
HORIBA RADIO LABORATORY was established in Japan in 1945 and has spent the last three-quarters of a century growing as an R&D company and engaged in international operations. HORIBA Scientific offers 200 years of experience developing high-performance scientific instruments and analytical solutions. The HORIBA Group of worldwide companies provides an extensive array of instruments and systems for applications ranging from automotive R&D, process and environmental monitoring, in-vitro medical diagnostics, semiconductor manufacturing, and metrology to a broad range of scientific R&D and QC measurements. Operating in Asia, Europe, and North and South America, HORIBA scientific develops solutions that go beyond just products.
AZ Instrument Corp., founded in Taichung City, Taiwan, in 1991 is a manufacturer of instruments and wearable devices to measure, monitor and record temperature. The company's product portfolio includes , Data Loggers, Gas Analysis Meters, Water Quality Testers, Heat Index Meters and Hygro-Thermometers. The company serves industries such as Oil and Gas, Aerospace and Defense, Automotive and Transportation, Construction, and Power Generation. They also provide services including product selection, installation, preventative maintenance, troubleshooting, and repair.
Anton Paar, founded in 1933 and headquartered in Graz, Austria, is a manufacturer and supplier of analytical instruments Their product range includes density meters for measuring liquid and solid density, concentration meters for analyzing solution concentration, viscosity meters for assessing liquid viscosity, particle size analyzers for measuring particle size in liquids or solids, and chromatography systems for substance separation and identification in mixtures. Anton Paar's products cater to a wide range of industries, including food and beverage, pharmaceutical, and chemical, providing analytical solutions for diverse applications.
OPTEX CO., LTD., established in 1979 and based in Shiga, Japan, is a manufacturer and supplier of sensors and IoT technologies. The company's product portfolio includes access control systems, environmental sensors, IoT devices, people counting systems, and intruder detection sensors and systems. These systems have applications in various industries, including the security industry, environmental monitoring, parking facilities, water quality monitoring, and others. The company is ISO 9001 Quality Management System (QMS) and ISO 14001 Environmental Management System (EMS) certified.
JFE Advantech Co.,Ltd. was established in 1973 and is a manufacturer of water instruments and measuring devices based in Nishinomiya, Hyogo, Japan. The company produces various products such as submerged level detectors, ultrasonic pulse coherent flowmeters, optical dissolved oxygen meters, electromagnetic flow velocity meters, and comprehensive water quality meters. The products have been used in various applications including sewage treatment plants, agricultural water systems, factory drainage, hydroelectric power plant, and deep wells management. The company have been certified with ISO 9001 for the water instruments and measuring products in 1995.
Mettler Toledo was incorporated in 1945 in Toledo, Ohio, and is today headquartered in Greifensee, Switzerland. Mettler Toledo is a manufacturer of various analytical instruments for use in laboratories, industrial and manufacturing, and food retailing applications to customers globally. Mettler Toledo offers many products across product lines for uses such as product inspection, process analytics, jewelry scales, moisture analyzers, and software for laboratory weighing. Mettler Toledo also offers numerous accessories such as density kits, hands-free accessories, weighing tables, and weight accessories.
Founded in 1890 in Missouri, Emerson Electric Co., is a technology and engineering company that provides various solutions for customers in industrial, commercial, and consumer markets globally. Business segments include automation solutions, AspenTech, and commercial & residential solutions segments. The Automation Solutions segment offers measurement and analytical instrumentation, industrial valves and equipment, and process control software and systems. The AspenTech segment provides asset optimization software for enhancing performance through a combination of modeling, simulation, and optimization capabilities. The Commercial & Residential Solutions segment offers residential and commercial HVAC products, system protector and flow control devices, and IoT thermostats.
Amprobe, founded in Everett, WA, in 1948 is a manufacturer of Ultrasonic Leak Detectors. The company's product portfolio includes battery testers, Electrical and HVAC Test and Measurement Tools, Digital Multimeters, Clamp Meters, and Wire Tracers & Cable Locators. The company serves industries such as Oil and Gas, Aerospace and Defense, Automotive and Transportation, Construction, and Power Generation. They also provide services including product selection, installation, preventative maintenance, troubleshooting, and repair.
Auxilab S.L., founded in 1985 in Zaragoza, Spain, is a manufacturer and supplier of lab equipment and scientific instruments. The company's extensive product lineup includes laboratory glassware, plasticware, and other essential tools utilized in various research, education, and industrial applications. Auxilab's products are integral for accurate experimentation and analysis in fields such as biology, and physics. Their product quality and precision ensure the advancement of scientific knowledge and creativity. The company also aims to serve the scientific community with ideal, quality equipment that supports research, learning, and discovery.
Extech Instruments Corp., founded in 1971 in the USA and acquired by Teledyne FLIR in 2007, is a manufacturer of consumer test and measurement tools. Today, the brand’s extensive catalog of handheld test equipment and accessories includes multi-functional handheld meters, including meters with integration with mobile devices via the use of iOS and Android apps and Bluetooth connectivity. Extech brand products are distributed across more than 100 countries worldwide and available for purchase online.
PCE Instruments UK Ltd., started in 199 and headquartered in Manchester, UK, is a manufacturer and supplier of test instruments, equipment, and tools for weighing, measuring, and control systems. The company offers more than 500 test equipment, including analyzers, inspection cameras, meters, detectors, and sensors, with applications in various fields like data acquisition, electrical engineering, environmental science, building inspection, and food processing. Its manufacturing and development division is ISO 9001 certified, all its test instruments, equipment, and tools are factory calibrated, and the company also provides services for custom test instrument design, installation, and maintenance.
PreSens Precision Sensing GmbH, founded in 1997 and situated in Regensburg, Germany, is a manufacturer and distributor of optical-chemical sensors and scientific instruments. Its product line includes sensor probes, meters, and complete systems for optical measurements of oxygen, pH, and carbon dioxide, catering to various scientific research fields and industrial applications. Certified with EN ISO 13485:2016 and EN ISO 9001:2015, the company underscores its adherence to maintaining quality standards in product production.
Global Test Supply is a distributor of process control instrumentation established in 2004 and headquartered in Wilmington, North Carolina, USA. The company stocks a wide range of REED products including inspection tools, water quality testing equipment, and calibration devices for electronic components. It also offers related accessories, such as carrying cases and lens covers. The company provides additional rental, repair, and calibration services for its products. It primarily serves customers in industrial manufacturing, quality control, and consumer electronics.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Traceable(R) |
12.0%
|
| 2 | Sper Scientific |
9.3%
|
| 3 | Omega Engineering, Inc. |
9.3%
|
| 4 | Mettler-Toledo |
9.3%
|
| 5 | Teledyne FLIR LLC |
8.0%
|
| 6 | YSI Inc. |
6.7%
|
| 7 | CLR Srl |
5.3%
|
| 8 | Auxilab |
5.3%
|
| 9 | AZ Instrument Corp. |
5.3%
|
| 10 | Hach Company |
4.0%
|
Derivation Method
The ranking is calculated based on the click share within the dissolved oxygen meter page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
8 | 40.0% |
|
Japan
|
4 | 20.0% |
|
China
|
2 | 10.0% |
|
Italy
|
1 | 5.0% |
|
Taiwan
|
1 | 5.0% |
|
Austria
|
1 | 5.0% |
|
Germany
|
1 | 5.0% |
|
United Kingdom
|
1 | 5.0% |
Switzerland
|
1 | 5.0% |
64 products found
64 products
Endress+Hauser Group Services AG
240+ people viewing
Last viewed: 1 day ago
Memosens optical oxygen sensor that is ideal for life science, pharmaceutical and food industry's sanitar application ◾️ Application Memosens COS...
Shinko Technos Co., Ltd.
300+ people viewing
Last viewed: 1 day ago
It is a type of digital insoluated oxygen that is installed in the DIN rail in the control panel that supports various purposes such as top water, ...
2 models listed
Yagyu Shokai Co., Ltd.
20+ people viewing
Last viewed: 18 hours ago
Very Fast Response
■High reproducibility It has excellent reproducibility because it does not consume oxygen. On the other hand, when using a membrane electrode to me...
Yagyu Shokai Co., Ltd.
20+ people viewing
Last viewed: 10 hours ago
Very Fast Response
■Features -A handheld dissolved oxygen meter that can measure from 0.00 to 20.00mg/L. ・Dissolved oxygen ATC (automatic temperature correction func...
Yagyu Shokai Co., Ltd.
20+ people viewing
Last viewed: 10 hours ago
Very Fast Response
■Features -Large, easy-to-read LCD screen with blue backlight. - Comes with auto power off function (10 minutes/20 minutes) and backlight display t...
Yagyu Shokai Co., Ltd.
20+ people viewing
Last viewed: 10 hours ago
Very Fast Response
■Features Large, easy-to-read LCD display.
Yagyu Shokai Co., Ltd.
20+ people viewing
Last viewed: 10 hours ago
Very Fast Response
■Features ・Completely waterproof structure that can be washed. - Comes standard with a "makitori-ru" which is convenient for winding up cables. - ...
Yagyu Shokai Co., Ltd.
20+ people viewing
Last viewed: 4 hours ago
Very Fast Response
■Features ・With IP67 dustproof and waterproof mechanism, it can be used at manufacturing sites and outdoors. -Dial type T-Pad makes operation easy...
Yagyu Shokai Co., Ltd.
40+ people viewing
Last viewed: 1 day ago
Very Fast Response
■Features - You can save manually or automatically at set time intervals when the values are stable. ・The data of the most recent calibration (o...
Yagyu Shokai Co., Ltd.
10+ people viewing
Last viewed: 38 minutes ago
Very Fast Response
■Features - Optical type that does not consume oxygen and has excellent reproducibility. - Backlight and sunlight proof for clear display even outd...
Yagyu Shokai Co., Ltd.
20+ people viewing
Last viewed: 11 hours ago
Very Fast Response
■Features ・A multi-logger that can measure up to 7 items (pH, conductivity, ORP, TDS, dissolved oxygen, salt concentration, temperature) by replac...
Yagyu Shokai Co., Ltd.
30+ people viewing
Last viewed: 11 hours ago
Very Fast Response
■Features - Data being measured can be stored in real time on an SD card (sold separately). - By using a variety of sensors (sold separately), it i...
Yagyu Shokai Co., Ltd.
20+ people viewing
Last viewed: 10 hours ago
Very Fast Response
■Features -It can be used in the field as everything necessary for dissolved oxygen measurement is packed in a carrying hard case. ・Real-time meas...
Ogawa Seiki Co., Ltd.
180+ people viewing
Last viewed: 11 hours ago
Standard Response
4.5 Company Review
■Features ・Large, easy-to-read 3.5-inch LCD display screen ・Measurement mode can be selected from automatic reading and auto hold. ・Auto/manual ...
3 models listed
Cem Corporation Co., Ltd.
210+ people viewing
Last viewed: 1 day ago
Standard Response
5.0 Company Review
Handy type DO meter ■Summary - A fluorescent dissolved oxygen meter that is handy and easy to use. - Maintenance is easier than conventional types...
Youpi Co., Ltd.
140+ people viewing
Last viewed: 9 hours ago
Standard Response
■Specifications Dissolved oxygen can be measured with a single switch. Adopts polarographic sensor. To check the water filter. It is used in school...
Custom Co., Ltd.
320+ people viewing
Last viewed: 9 hours ago
Standard Response
4.0 Company Review
■ Simultaneous display of dissolved oxygen and temperature. ・ IP67 dustproof, waterproof resistance. ・ The “auto lock function” that holds the me...
OPTEX CO., LTD.
290+ people viewing
Last viewed: 9 hours ago
Standard Response
･ Adoption of corrosion -resistant resin housing ･ Maintenance load is reduced compared to the diameter type
Token Engineering
20+ people viewing
Last viewed: 12 hours ago
This is a measuring instrument that measures water temperature and DO (dissolved oxygen) in rivers, lakes, dams, ocean areas, water purification pl...
Endress+Hauser Group Services AG
220+ people viewing
High -precision and reliable O2 measurement for natural gas and gas processing applications ■ Applications OXY5500 dissolved oxygen analyzer is a ...
Endress+Hauser Group Services AG
220+ people viewing
Last viewed: 9 hours ago
Memosens Technology -mounted optical type dissolved oxygen sensor for utilities and waste water treatment and utility applications ◾️ Application...
T&C Technical Co., Ltd.
190+ people viewing
Last viewed: 9 hours ago
■ Safely measure dissolved oxygen at sites exposed to water The drip-proof performance complies with IP65, and the sensor uses a process-use fluore...
T&C Technical Co., Ltd.
130+ people viewing
■Area used Dam/river water quality observation equipment, air conditioning equipment, wastewater treatment equipment CIP: Not supported SIP: Not su...
T&C Technical Co., Ltd.
390+ people viewing
■Features Using LED light and a phosphor that absorbs and emits light, oxygen concentration is measured in the range of 4ppb to 25ppm using the pri...
10 models listed
T&C Technical Co., Ltd.
120+ people viewing
Hamilton uses the advantages of optical dissolved oxygen sensors to measure dissolved oxygen in water, which was previously difficult to do. We hav...
T&C Technical Co., Ltd.
160+ people viewing
Last viewed: 1 minute ago
A new all-resin model that does not use any metal has been added to the Bisiwater series of immersion waterproof models. We will continue to expand...
Hanna Instruments JAPAN
20+ people viewing
■Latest spectrophotometer series The HI 97732 is a portable digital spectrophotometer that measures dissolved oxygen. (0.0 to 10.0 mg/L) The dedica...
Hanna Instruments JAPAN
30+ people viewing
Last viewed: 4 hours ago
■Perfect for those who want to measure pH by inserting an electrode Among the popular drop-in multi-item measuring instruments, many people find it...
Hanna Instruments JAPAN
30+ people viewing
Last viewed: 10 hours ago
■Throw-in type suitable for checking water quality in groundwater, rivers, aquaculture, etc. This is an excellent product that allows you to connec...
Hanna Instruments JAPAN
20+ people viewing
Last viewed: 8 hours ago
■Throw-in type suitable for checking water quality in rivers, lakes, aquaculture, etc. This is an excellent product that allows you to connect a pH...
