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Dissolved Oxygen (DO) Meters
Perform your dissolved oxygen measurements with confidence
Achieve precise and reliable dissolved oxygen measurement with Orion bench and portable dissolved oxygen meters. Ideal for various industries, including environmental monitoring, wastewater treatment, aquaculture and more, Orion dissolved oxygen meters help you achieve regulatory compliance. Combining advanced technology, user-friendly interfaces, and robust construction, these meters ensure accurate data collection. Suitable for both lab and field use, they measure using polarographic and optical technology, with flexible calibration options. Explore Orion dissolved oxygen meters for precision and reliability tailored to your needs. Browse our complete portfolio or let one of our experts help you make a selection.
Select your dissolved oxygen bench or portable meter
Premium | Advanced | Basic | |
|---|---|---|---|
| Orion Versa Star Pro Dissolved Oxygen Bench Meter (Versa Star Pro series) | Orion Pro Star DO213 Dissolved Oxygen Bench Meter (Pro Star series) | Orion Lab Star DO113 Dissolved Oxygen Bench Meter (Lab Star series) | |
 |  |  | |
| Versatile, high-performance laboratory meters | Easy to use, dependable laboratory meters | Economical, simplified laboratory meters | |
| Ideal for applications in: | Pharmaceuticals, biotechnology, industrial | Environmental, water/ wastewater, food & beverage, industrial | Academic, environmental, power |
| Compatible probes | Optical, polarographic | Optical, polarographic | Optical, polarographic |
| DO range (polarographic) | 0 to 90 mg/L, 0 to 600% | 0.01 to 90.0 mg/L or ppm, 0.0 to 600.0% saturation | 0 to 30 mg/L, 0 to 300% |
| DO range (RDO optical) | 0 to 50 mg/L, 0 to 500% | 0.01 to 90.0 mg/L or ppm, 0.0 to 600.0% saturation | — |
| DO calibration modes | Water-saturated air or air saturated water 100% and 0% saturation, custom concentration value (Winkler) | Water-saturated air or air saturated water 100% and 0% saturation, custom concentration value (Winkler) | 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 built-in barometer or manual entry | Automatic with manual factor input |
| Temperature range | -5 to 105°C 23 to 221°F | -30 to 130°C -22 to 266°F | -5 to 105°C 23 to 221°F |
| Number of channels | 4, customizable with modules | 1 | 1 |
| Stirrer probe inputs | 2 | 1 | — |
| Display | 5.3-inch, backlit color display | 7-inch, high-resolution, backlit color display | 5-inch, backlit segmented display |
| Touchscreen | No | Yes | No |
| Onscreen text prompts | Step-by-step calibration and guided setup instructions | Step-by-step calibration and guided setup instructions | Basic calibration and setup instructions |
| Identification options | Electrode ID, sample ID, user ID | Electrode ID, sample ID, user ID | — |
| Data log | 2000 with date/time | 10000 with date/time | 500 with date/time |
| Calibration log | 30 per parameter | 20 per parameter | — |
| Data export options | Computer, printer | Computer, printer, USB flash drive | Computer, printer |
| Power supply | Universal, 100–240 VAC, 50-60 Hz (Cat. No. STARA-PWR) | Universal, 100-240 VAC, 50-60Hz (Cat. No. PSTAR-PWR), 9 DC adapter, 2.0A | Universal, 100-240 VAC, 50-60Hz (Cat. No. LSTAR-PWR), 9 DC adapter, 1.3A |
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 Dissolved Oxygen Bench Meter (Versa Star Pro series) | Orion Pro Star DO213 Dissolved Oxygen Bench Meter (Pro Star series) | Orion Lab Star DO113 Dissolved Oxygen Bench Meter (Lab Star series) | |
| | | |
| Versatile, high-performance laboratory meters | Easy to use, dependable laboratory meters | Economical, simplified laboratory meters | |
| Ideal for applications in: | Pharmaceuticals, biotechnology, industrial | Environmental, water/ wastewater, food & beverage, industrial | Academic, environmental, power |
| Compatible probes | Optical, polarographic | Optical, polarographic | Optical, polarographic |
| DO range (polarographic) | 0 to 90 mg/L, 0 to 600% | 0.01 to 90.0 mg/L or ppm, 0.0 to 600.0% saturation | 0 to 30 mg/L, 0 to 300% |
| DO range (RDO optical) | 0 to 50 mg/L, 0 to 500% | 0.01 to 90.0 mg/L or ppm, 0.0 to 600.0% saturation | — |
| DO calibration modes | Water-saturated air or air saturated water 100% and 0% saturation, custom concentration value (Winkler) | Water-saturated air or air saturated water 100% and 0% saturation, custom concentration value (Winkler) | 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 built-in barometer or manual entry | Automatic with manual factor input |
| Temperature range | -5 to 105°C 23 to 221°F | -30 to 130°C -22 to 266°F | -5 to 105°C 23 to 221°F |
| Number of channels | 4, customizable with modules | 1 | 1 |
| Stirrer probe inputs | 2 | 1 | — |
| Display | 5.3-inch, backlit color display | 7-inch, high-resolution, backlit color display | 5-inch, backlit segmented display |
| Touchscreen | No | Yes | No |
| Onscreen text prompts | Step-by-step calibration and guided setup instructions | Step-by-step calibration and guided setup instructions | Basic calibration and setup instructions |
| Identification options | Electrode ID, sample ID, user ID | Electrode ID, sample ID, user ID | — |
| Data log | 2000 with date/time | 10000 with date/time | 500 with date/time |
| Calibration log | 30 per parameter | 20 per parameter | — |
| Data export options | Computer, printer | Computer, printer, USB flash drive | Computer, printer |
| Power supply | Universal, 100–240 VAC, 50-60 Hz (Cat. No. STARA-PWR) | Universal, 100-240 VAC, 50-60Hz (Cat. No. PSTAR-PWR), 9 DC adapter, 2.0A | Universal, 100-240 VAC, 50-60Hz (Cat. No. LSTAR-PWR), 9 DC adapter, 1.3A |
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 |
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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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