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Dissolved Oxygen (DO) Meters
Meet your regulatory needs with technology that is ideal for a wide range of applications and advanced dissolved oxygen analysis in the lab. Orion advanced and premium benchtop meters offer the flexibility to measure both polargraphic and optical technology. A dedicated kit, complete with BOD stirrer probe needed to fit in a DO bottle for airtight incubation, is available with the Orion Star A213 meter.
Calibrate using water-saturated air, air-saturated water, or custom value, using Winkler titration or zero point options. Log up to 2,000 data point sets with time/date stamp, and easily transfer calibration and data logs via USB or RS232 to a printer or computer when using an Orion advanced or premium dissolved oxygen meter.
Browse the complete portfolio or speak with an expert for assistance.
Select your dissolved oxygen bench or portable meters
Premium | Advanced | Basic | |
|---|---|---|---|
| Orion Versa Star Pro RDO/DO (VSTAR30 series) | Orion Star A213 RDO/DO (STARA2130 series) | Orion Lab Star DO113 DO (Lab Star series) | |
 |  |  | |
| Versatile, high-performance laboratory measurement system | Easy-to-use, dependable laboratory meters | Economical, simplified laboratory meters | |
| Ideal for applications in: | Pharmaceuticals, biotechnology, food and beverage, industrial | Water, wastewater, chemical, contract testing | Academic, environmental, power |
| Compatible probes | Optical, polarographic | Optical, polarographic | Polarographic |
| DO range (polarographic) | 0 to 90 mg/L, 0 to 600% | 0 to 90 mg/L, 0 to 600% | 0 to 30 mg/L, 0 to 300% |
| DO range (RDO optical) | 0 to 50 mg/L, 0 to 500% | 0 to 50 mg/L, 0 to 500% | --- |
| DO calibration modes | Water-saturated air, air-saturated water, manual (Winkler), zero point | Water-saturated air, air-saturated water, manual (Winkler), zero point | 100% and 0% saturation; custom concentration value |
| Barometric pressure compensation | Automatic with built-in barometer | Automatic with built-in barometer | Automatic with manual value input |
| Salinity correction | Automatic with conductivity module and probe or manual input | Automatic with manual factor input | Automatic with manual factor input |
| Backlit display | Yes | Yes | Yes |
| Number of channels | 4, customizable with modules | 1 | 1 |
| Stirrer probe inputs | 2 | 1 | --- |
| Data log | 2,000 with date/time | 2,000 with date/time | 500 sets with date/time |
| Calibration log | 30 per mode | 10 | 1 |
| Identification options | Electrode ID, sample ID, user ID | Sample ID, user ID | --- |
| Data export output | Computer or printer | Computer or printer | Computer or printer |
| Power supply | Universal, 1000150–240 VAC, 50–60 Hz (Cat. No. STARA-PWR) | Universal, 100–240 VAC, 50–60 Hz (Cat. No. 1010003) or 4 AA batteries | Universal, 100–240 VAC, 50–60 Hz (Cat. No. LSTAR-PWR), 9DC adapter, 1.3A |
| Enhance your productivity with accessories for your benchtop and portable meters. Meter Accessories › | |||
Premium | Advanced | Basic | |
|---|---|---|---|
| Orion Star A323 Dissolved Oxygen (STARA3230 series) | Orion Star A223 Dissolved Oxygen (STARA2230 series) | Orion Star A123 Dissolved Oxygen (STARA1230 series) | |
 |  |  | |
| Compatible probes | RDO, polarographic | RDO, polarographic | Polarographic |
| DO range (polarographic) | 0 to 600% saturation | 0 to 600% saturation | 0 to 200% Saturation |
| DO range (RDO optical) | 0 to 50 mg/L | 0 to 50 mg/L | --- |
| DO calibration modes | Water-saturated air, air saturated water, manual (Winkler), and zero point | Water-saturated air, air saturated water, manual (Winkler), and zero point | Water-saturated air, manual (Winkler) |
| Barometric pressure compensation | 400 to 850 mmHg, automatic or manual | 400 to 850 mmHg, automatic or manual | --- |
| Salinity Correction | 0 to 45 ppt | 0 to 45 ppt | 0 to 45 |
| Backlit Display | Yes | Yes | --- |
| Number of channels | 1 | 1 | 1 |
| Data log | 5000 with time and date stamp | 1000 with time and date stamp | 50 |
| Data export options | RS232,USB | RS232, USB | RS232, USB |
| AC Adapter | Optional—universal, 100-240 VAC | Optional—universal, 100-240 VAC | Optional—universal, 100-240 VAC |
| Battery power | Included—4AA's | Included—4AA's | Included—4AA's |
| Enhance your productivity with accessories for your benchtop and portable meters. Meter Accessories › | |||
Advanced | Basic | |
|---|---|---|
| Eutech DO2700 Dissolved Oxygen Bench Meter | Eutech 1730 Dissolved Oxygen Bench Meter | |
 |  | |
| Economical, routine laboratory meters | Budget-friendly, simple laboratory meters | |
| Compatible probes | Polarographic | Galvanic |
| DO range (Polarographic) | 0.00 to 50.00 mg/L; 0 to 600.0 % saturation | --- |
| DO range (Galvanic) | --- | 0 to 30 mg/L; 0 to 300.0 % saturation |
| DO calibration modes | Water-saturated air, zero point, manual (Winkler) | 100% and 0% saturation, manual concentration value (Winkler) |
| Barometric pressure compensation | Automatic with built-in barometer | Automatic with manual value entry |
| Salinity correction | Automatic with manual value entry | Automatic with manual value entry |
| Range (temperature) | 0.0 to 50.0 °C, 32.0 to 122.0 °F | -5.0 to 105.0 ºC |
| Backlit display | Yes | Yes |
| Number of channels | 1 | 1 |
| Stirrer probe inputs | Yes | --- |
| Data log | 500 with date/time | 500 with date/time |
| Calibration log | Most recent viewable on meter and stored in meter memory | Active dissolved oxygen, temperature with time and date |
| Data export options | RS232 | Computer or printe |
| Power supply | Universal, 100-240VAC, 50/60 Hz, Cat. No. 60X426401 | Universal, 100–240VAC, 50–60Hz (Cat. No. EB1700PWR), 9 DC adapter, 1.3A |
Watch and learn more:
Features & Benefits of the Eutech 1730 Dissolved Oxygen Bench Meter
Premium | Advanced | Basic | |
|---|---|---|---|
| Eutech DO 450 Portable Dissolved Oxygen Meter | Eutech DO 600 Portable Dissolved Oxygen Meter | Eutech DO 6+ Portable Dissolved Oxygen Meter | |
 |  |  | |
| Compatible probes | RDO | Polorographic | Polorographic |
| DO range (polarographic) | --- | 0 to 90.00 mg/L or ppm | 0.00 to 19.99 mg/L or ppm |
| DO range (RDO optical) | 0 to 200 %; 0 to 20 ppm/mg/L | --- | --- |
| DO calibration modes | Zero and saturation | 2-point (0 %, 100 %), 1-point (mg/L) | 2-point (0 %, 100 %), 1-point (mg/L) |
| Barometric pressure compensation | Manual | 450 to 825 mmHg / 59.9 to 109.9 kPa | 500 to 1499 mmHg / 66.6 to 199.9 kPa (Manual Input) |
| Salinity correction | Manual | 0.0 to 50.0 ppt (Manual Input) | 0.0 to 50.0 ppt (Manual Input) |
| Backlit display | Yes | Yes | --- |
| Number of channels | 1 | 1 | 1 |
| Data log | 500 with time and date stamp | 500 with time and date stamp | --- |
| Data export options | USB or RS232 | IrDA, RS232C (via LED) | --- |
| AC adapter | 9 V DC adapter, 1.3 A (100/240 VAC, SMPS) (optional) | 9 V DC adapter | --- |
| Battery power | Two AA batteries (included) | Included—4AAs | 4 x AAA batteries |
Premium | Advanced | Basic | |
|---|---|---|---|
| Orion Versa Star Pro RDO/DO (VSTAR30 series) | Orion Star A213 RDO/DO (STARA2130 series) | Orion Lab Star DO113 DO (Lab Star series) | |
| | | |
| Versatile, high-performance laboratory measurement system | Easy-to-use, dependable laboratory meters | Economical, simplified laboratory meters | |
| Ideal for applications in: | Pharmaceuticals, biotechnology, food and beverage, industrial | Water, wastewater, chemical, contract testing | Academic, environmental, power |
| Compatible probes | Optical, polarographic | Optical, polarographic | Polarographic |
| DO range (polarographic) | 0 to 90 mg/L, 0 to 600% | 0 to 90 mg/L, 0 to 600% | 0 to 30 mg/L, 0 to 300% |
| DO range (RDO optical) | 0 to 50 mg/L, 0 to 500% | 0 to 50 mg/L, 0 to 500% | --- |
| DO calibration modes | Water-saturated air, air-saturated water, manual (Winkler), zero point | Water-saturated air, air-saturated water, manual (Winkler), zero point | 100% and 0% saturation; custom concentration value |
| Barometric pressure compensation | Automatic with built-in barometer | Automatic with built-in barometer | Automatic with manual value input |
| Salinity correction | Automatic with conductivity module and probe or manual input | Automatic with manual factor input | Automatic with manual factor input |
| Backlit display | Yes | Yes | Yes |
| Number of channels | 4, customizable with modules | 1 | 1 |
| Stirrer probe inputs | 2 | 1 | --- |
| Data log | 2,000 with date/time | 2,000 with date/time | 500 sets with date/time |
| Calibration log | 30 per mode | 10 | 1 |
| Identification options | Electrode ID, sample ID, user ID | Sample ID, user ID | --- |
| Data export output | Computer or printer | Computer or printer | Computer or printer |
| Power supply | Universal, 1000150–240 VAC, 50–60 Hz (Cat. No. STARA-PWR) | Universal, 100–240 VAC, 50–60 Hz (Cat. No. 1010003) or 4 AA batteries | Universal, 100–240 VAC, 50–60 Hz (Cat. No. LSTAR-PWR), 9DC adapter, 1.3A |
| Enhance your productivity with accessories for your benchtop and portable meters. Meter Accessories › | |||
Premium | Advanced | Basic | |
|---|---|---|---|
| Orion Star A323 Dissolved Oxygen (STARA3230 series) | Orion Star A223 Dissolved Oxygen (STARA2230 series) | Orion Star A123 Dissolved Oxygen (STARA1230 series) | |
| | | |
| Compatible probes | RDO, polarographic | RDO, polarographic | Polarographic |
| DO range (polarographic) | 0 to 600% saturation | 0 to 600% saturation | 0 to 200% Saturation |
| DO range (RDO optical) | 0 to 50 mg/L | 0 to 50 mg/L | --- |
| DO calibration modes | Water-saturated air, air saturated water, manual (Winkler), and zero point | Water-saturated air, air saturated water, manual (Winkler), and zero point | Water-saturated air, manual (Winkler) |
| Barometric pressure compensation | 400 to 850 mmHg, automatic or manual | 400 to 850 mmHg, automatic or manual | --- |
| Salinity Correction | 0 to 45 ppt | 0 to 45 ppt | 0 to 45 |
| Backlit Display | Yes | Yes | --- |
| Number of channels | 1 | 1 | 1 |
| Data log | 5000 with time and date stamp | 1000 with time and date stamp | 50 |
| Data export options | RS232,USB | RS232, USB | RS232, USB |
| AC Adapter | Optional—universal, 100-240 VAC | Optional—universal, 100-240 VAC | Optional—universal, 100-240 VAC |
| Battery power | Included—4AA's | Included—4AA's | Included—4AA's |
| Enhance your productivity with accessories for your benchtop and portable meters. Meter Accessories › | |||
Advanced | Basic | |
|---|---|---|
| Eutech DO2700 Dissolved Oxygen Bench Meter | Eutech 1730 Dissolved Oxygen Bench Meter | |
| | |
| Economical, routine laboratory meters | Budget-friendly, simple laboratory meters | |
| Compatible probes | Polarographic | Galvanic |
| DO range (Polarographic) | 0.00 to 50.00 mg/L; 0 to 600.0 % saturation | --- |
| DO range (Galvanic) | --- | 0 to 30 mg/L; 0 to 300.0 % saturation |
| DO calibration modes | Water-saturated air, zero point, manual (Winkler) | 100% and 0% saturation, manual concentration value (Winkler) |
| Barometric pressure compensation | Automatic with built-in barometer | Automatic with manual value entry |
| Salinity correction | Automatic with manual value entry | Automatic with manual value entry |
| Range (temperature) | 0.0 to 50.0 °C, 32.0 to 122.0 °F | -5.0 to 105.0 ºC |
| Backlit display | Yes | Yes |
| Number of channels | 1 | 1 |
| Stirrer probe inputs | Yes | --- |
| Data log | 500 with date/time | 500 with date/time |
| Calibration log | Most recent viewable on meter and stored in meter memory | Active dissolved oxygen, temperature with time and date |
| Data export options | RS232 | Computer or printe |
| Power supply | Universal, 100-240VAC, 50/60 Hz, Cat. No. 60X426401 | Universal, 100–240VAC, 50–60Hz (Cat. No. EB1700PWR), 9 DC adapter, 1.3A |
Watch and learn more:
Features & Benefits of the Eutech 1730 Dissolved Oxygen Bench Meter
Premium | Advanced | Basic | |
|---|---|---|---|
| Eutech DO 450 Portable Dissolved Oxygen Meter | Eutech DO 600 Portable Dissolved Oxygen Meter | Eutech DO 6+ Portable Dissolved Oxygen Meter | |
| | | |
| Compatible probes | RDO | Polorographic | Polorographic |
| DO range (polarographic) | --- | 0 to 90.00 mg/L or ppm | 0.00 to 19.99 mg/L or ppm |
| DO range (RDO optical) | 0 to 200 %; 0 to 20 ppm/mg/L | --- | --- |
| DO calibration modes | Zero and saturation | 2-point (0 %, 100 %), 1-point (mg/L) | 2-point (0 %, 100 %), 1-point (mg/L) |
| Barometric pressure compensation | Manual | 450 to 825 mmHg / 59.9 to 109.9 kPa | 500 to 1499 mmHg / 66.6 to 199.9 kPa (Manual Input) |
| Salinity correction | Manual | 0.0 to 50.0 ppt (Manual Input) | 0.0 to 50.0 ppt (Manual Input) |
| Backlit display | Yes | Yes | --- |
| Number of channels | 1 | 1 | 1 |
| Data log | 500 with time and date stamp | 500 with time and date stamp | --- |
| Data export options | USB or RS232 | IrDA, RS232C (via LED) | --- |
| AC adapter | 9 V DC adapter, 1.3 A (100/240 VAC, SMPS) (optional) | 9 V DC adapter | --- |
| Battery power | Two AA batteries (included) | Included—4AAs | 4 x AAA batteries |
Explore versatile meters that combine testing capabilities
Measure pH, ion concentration, conductivity, dissolved oxygen, and temperature with a single, powerful meter. Our bench and portable multiparameter meters are designed to increase your productivity in the lab and in the field.
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Orion Lab Star DO113 DO Bench Meter
The Thermo Scientific Orion Lab Star DO113 Dissolved Oxygen Bench Meter is ideally suited for laboratories with users of varying levels of technical expertise and who require a simple-to-calibrate and use meter for routine dissolved oxygen testing. Watch this video to explore the features available with the Orion Lab Star DO Bench Meter.
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· pH & Multiparameter Benchtop & Portable Meters
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Thermo Scientific DO Meter Features
Focused on
Ease-of-Use
- Large, easy-to-view displays help make recording measurements easier, faster and can help reduce documentation errors
- Onscreen instructions provide guidance on calibration and setup for more consistent operation with minimum training
Provide Fast and Reliable Measurements
- Selectable read modes and reading stability indicator capture and notify when measurements are ready
- Calibration information shown with measurements and selectable alarms help to ensure measurement integrity
Assist with Compliance Requirements
- Measure dissolved oxygen in percent saturation or mg/L with temperature
- Perform DO calibrations using water-saturated air, air-saturated water, custom value (Winkler) or zero point
- Select a meter with built-in barometer for automatic pressure compensated readings
International standards for regulatory compliance requirements:
Parameter | EPA | SM | ASTM | ISO | China MEP | USP | EP | AOAC | Other |
|---|---|---|---|---|---|---|---|---|---|
pH | EPA 150.1 | 4500-H+(B) | D1293 (A,B) | 10523 | GB/T 6920 | <791> | 2.2.3 | 973.41 | FDA - 21 CFR 114.90 |
pH of Soil/Solid Waste | SW-846 9040C & 9045D | D4972 | 10390 | GB/T15555 | 994.16 - 994.18 | USDA NRCS | |||
Conductivity | EPA 120.1; SW-846 9050A | 2510 (B) | D1125 (A) | 7888 | n/a | <645> | 2.2.38 | 973.40 | PSS-78 (salinity) |
Dissolved Oxygen | 4500-O (G) | D888 (B, C) | 17289; 5814 | HJ506 | |||||
BOD | 5210 (B) | 5815 | HJ505 | 973.44 | |||||
Fluoride | SW-846 9214 | 4500-F (C ) | D1179 (B) | 10359 | GB7484 | ||||
Ammonia | 4500-NH3 (D, E) | D1426 (B) | 6778 | ||||||
Nitrate | Orion 601; SW-846 9210A | 4500-NO3 (D) | |||||||
Sulfide | SW-846 9215 | 4500-S2 (G) | D4658 | ||||||
Cyanide | SW-846 9213 | 4500-CN (F) | D2036 (A) | ||||||
Chloride | SW-846 9212 | 4500-Cl (D) | D512 (C) | GB11896 | |||||
Bromide | SW-846 9211 |
| SM: Standard Methods for the Examination of Water and Wastewater. APHA, AWWA, WEF. | |
| ASTM: American Society for the Testing and Materials | |
| ISO: International Organization for Standardization | |
| USP: United States Pharmacopeia | |
| EP: European Pharmacopeia | |
| China MEP: China Ministry of Environmental Protection | |
| AOAC: Association of Official Analytical Chemists | |
| NRCS: Natural Resources Conservation Service | |
| PSS-78: Practical Salinity Scale of 1978 | |
| FDA: U.S. Food and Drug Administration | |
| USDA: United Stated Department of Agriculture |
See our complete list of DO measurement offerings
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An extensive assortment of quality pH electrodes and sensors are available in a variety of body materials, body styles, fill types, reference styles, and junctions to meet the needs of your sample measurements.
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Style Sheet for Global Design System
Style Sheet for Global Design System