Dissolved Oxygen Sensors 

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Manufacturers and distributors of Dissolved Oxygen Sensors
Dissolved Oxygen
Sensors, controllers and analyzers to monitor dissolved oxygen.
www.jumoplus.com
Seahorse Bioscience
Measure Mitochondrial Function in Real-time in Living Cells
www.SeahorseBio.com
Dissolved Oxygen Sensors
Mettler-Toledo's Dissolved Oxygen Sensors to monitor your processes.
www.mt.com/do
Water Quality Monitors
With wireless telemetry. For the professional.
www.RemoteDataInc.com
Dissolved Oxygen Meter
Receive Unlimited Shipping For $39 Per Year On Ben Meadows® Products!
www.benmeadows.com
Dissolved Oxygen Testing
Recommended by Labs Dissolved Oxygen Testing
www.Preiser.com
Blue Box Sensors
Implantable micro-sensors - Glucose Oxygen & Nitric Oxide measurement
www.blueboxsensors.com
Pulse Oximeters from $44
New FDA models, Free Case Offers Safe & Secure with Free Shipping
www.SEMedicalSupply.com
Wastewater Treatment
Odor & Water Quality Solutions ECO Oxygen Technologies, LLC
www.eco2tech.com
In-Situ Inc. RDO® Sensor
ASTM D888-05, LDO method Optical dissolved oxygen (DO)
www.in-situ.com
Optical D.O. Meter
For aeration lanes and oxidation ditches - autocleans too!
www.processinstruments.net
Water Quality Instruments
Optical DO,pH,SC,Turb,ORP,NH4+,TDG Best value, Calibration Solutions
www.eurekaenvironmental.com
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InsiteIG Water Analyzers
Manufacturer of optical dissolved oxygen sensors, suspended solids, pH, and ORP control systems.
www.insiteig.com
Dissolved Oxygen
Sensors, controllers and analyzers to monitor dissolved oxygen.
www.jumoplus.com
Seahorse Bioscience
Measure Mitochondrial Function in Real-time in Living Cells
www.SeahorseBio.com
Dissolved Oxygen Sensors
Mettler-Toledo's Dissolved Oxygen Sensors to monitor your processes.
www.mt.com/do

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Guide to Dissolved Oxygen Sensors

Use dissolved oxygen sensors to determine marine ecosystem concentrations and to control industrial processes

By W. Aiman Mueller


Dissolved oxygen (DO) sensors and probes detect levels of dissolved oxygen in liquids, typically water, usually for biological measurements and for industrial process applications. Readouts will usually display dissolved oxygen concentration in either parts per million or milligrams per liter.

Another type of readout involves comparing a calculation of the maximum dissolved oxygen concentration with the actual concentration, expressed as a percentage. The variables that affect the maximum concentration are the atmospheric pressure just above the liquid, the temperature of the liquid, and the presence of other substances in the liquid.

Here are a few different types of dissolved oxygen sensors:

1. Galvanic dissolved oxygen sensors employ electrodes and remain stable and accurate even at low dissolved oxygen concentrations. Another benefit is that they do not require frequent replacement of electrolyte fluid.

2. Polarographic dissolved oxygen sensors also employ electrodes, but require the addition of an external voltage input and relatively frequent replacement of electrolyte fluid.

3. A optical dissolved oxygen sensor does not use electrolyte fluid at all, but an optode instead. In this case, an optical cable detects a film that reacts to dissolved oxygen with fluorescence.

Action Steps
The best contacts and resources to help you get it done


Shop dissolved oxygen sensor suppliers that also carry accessories

Various types of dissolved oxygen sensor instruments require different supplies to keep them operating. Especially if you intend to put your dissolved oxygen sensor equipment to heavy use, shop DO sensor sources that also carry the supplies.

I recommend: Veriner carries a sensor with a range of 0 to 14 mg/l. They also sell filling solution, calibration solution, membranes and other supplies to keep the sensor operating. Sensorex sells both lab and process dissolved oxygen probes. They also carry supplies and accessories to help their customers get longterm use out of their products.

Locate industrial dissolved oxygen sensors that suit your needs

Controlling dissolved oxygen levels in industrial processes helps optimize efficiency of production and quality of product. Chemical reactions often require the control of oxygen levels. Some dissolved oxygen sensor manufacturers specialize in this type of equipment.

I recommend: Mettler Toledo carries several products for sterile processes, as well as low level situations. They also have a waste water dissolved oxygen sensor. If you're looking for hand-held dissolved oxygen meters, then Instrumart is your place. They carry several models designed specifically for industrial processes.

Buy a quality optical dissolved oxygen sensor

Sometimes divers and biologists prefer the newer optical technology which requires relatively less care. Some conventional sensors have more variables due to changes in the electrolyte fluid during heavy use. Also, optical sensors often work better in stagnant water.

I recommend: AADI specializes in oceanic science and has many quality sensors, including the optical dissolved oxygen sensor. Another source is Global Water Instrumentation, Inc. which carries a model that features long life, bio-fouling resistance; their unit is unaffected by water current or a lack thereof.

Tips & Tactics

Helpful advice for making the most of this Guide

  • •  If you have a fish farm, get a dissolved oxygen sensor to help optimize the respiration and growth of your fish.
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Dissolved Oxygen Sensors

Use dissolved oxygen sensors to determine marine ecosystem concentrations and to control industrial processes.
Dissolved oxygen (DO) sensors and probes detect levels of dissolved oxygen in liquids, typically water, usually for biological measurements and for industrial process applications. Readouts will usually display dissolved oxygen concentration in either parts per million or milligrams per liter.Another type of readout involves comparing a calculation of the maximum dissolved oxygen concentration with the actual concentration, ... Read more

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