Dissolved Oxygen Analyzer / Dissolved Oxygen Monitor

Dissolved oxygen refers to the amount of oxygen present in water and is a common indicator of water quality as levels too high or too low can harm aquatic life. Dissolved oxygen meters, also called dissolved oxygen analyzers, are the most common and effective means of measuring oxygen levels in water. A standard model consists of a probe and a monitor for reading off and recording oxygen levels. To make measurements more precise, many models make automatic adjustments to account for fluctuations in factors such as pressure and temperature that might otherwise affect oxygen readings. In some cases, the probes serve dual purposes or can be switched out to monitor other variables such as pH or CO2 levels.

The two main types of oxygen meters are optical (also called luminescent meters) and electrochemical meters. Electrochemical meters take faster readings but need to be stirred in a solution to calibrate before use. Optical meters last longer and do not need to be calibrated before each use, but they their readings take longer and they require more power.

CompanyThermo Fisher ScientificThermo Fisher ScientificThermo Fisher ScientificThermo Fisher Scientific
ItemOrion™ VERSA STAR™ pH, ISE, Conductivity and Dissolved Oxygen Multiparameter Benchtop MeterOrion Star™ A113 Dissolved Oxygen Benchtop MeterOrion Star™ A213 Dissolved Oxygen Benchtop MeterOrion™ VERSA STAR™ DO Benchtop Meter
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Catalog NumberVSTAR90 / VSTAR91 / VSTAR92 / VSTAR93STARA1130 / STARA1135STARA2130 / STARA2135 / STARA2136VSTAR30 / VSTAR32
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DescriptionView readings in real time or transfer stored results with the Thermo Scientific™ Orion™ VERSA STAR™ pH/ISE/Conductivity/Dissolved Oxygen Multiparameter Benchtop Meter, featuring LCD display, a USA port and customizable channels. This advanced electrochemistry meter comes with pH/ISE, conductivity ... Read MoreTake simple, accurate dissolved oxygen measurements with the Thermo Scientific™ Orion Star™ A113 Dissolved Oxygen Benchtop Meter. It is easy to use and affordable.

Features:
  • Large, informative screen clearly shows the main information, including DO reading in mg/L or % saturation, temperature, meter
... Read More
Get the information you need quickly and easily using the Thermo Scientific™ Orion Star™ A213 Dissolved Oxygen Benchtop Meter, ideal for any lab or application. The A213 has an IP54-rated housing that handles splashes and is wall-mountable if table space is not available, providing ultimate ... Read MoreA meter as you need it for now and later. The Thermo Scientific™ Orion™ VERSA STAR™ is an advanced electrochemistry meter that includes a dissolved oxygen/temperature module and provides four channels that can be customized with any of our five available modules. This meter is also available as an ... Read More
TypeBenchtopBenchtopBenchtopBenchtop
Measurement Mode(s)pH, mV, RDO, Polarographic DO, Temperature, Conductivity, Resistivity, Salinity, TDSInquireDissolved oxygen as % saturation or mg/L with temperature and barometric pressureDissolved oxygen as % saturation or mg/L with temperature and barometric pressure
AccuracyPolarographic DO: ±0.2mg/L or ±2% of reading, whichever is greater
RDO: ±0.1mg/L up to 8mg/L, ±0.2mg/L from 8 to 20mg/L, ±10% of reading up to 50mg/L
InquirePolarographic DO: ±0.2mg/L or ±2% of reading, whichever is greater
RDO: ±0.1mg/L up to 8mg/L, ±0.2mg/L from 8 to 20mg/L, ±10% of reading up to 50mg/L
Polarographic DO: ±0.2mg/L or ±2% of reading, whichever is greater
RDO: ±0.1mg/L up to 8mg/L, ±0.2mg/L from 8 to 20mg/L, ±10% of reading up to 50mg/L
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