Measuring Dissolved Oxygen

Dissolved oxygen, necessary for aquatic organisms, is an essential measurement to document changes due to natural phenomena and human activity. Optical dissolved oxygen probes are offered for field-ready applications. Polarographic laboratory-grade dissolved oxygen probes are available for more sensitive and critical measurements.


Featured probes:

View all
 Rugged, low maintenance field probeAUTO-STIR probe for BOD applicationsDurable and accurate DO probes for the lab or fieldConvert any pH meter into a DO meter
 RDO Dissolved Oxygen field probePolargraphic DO probe for BOD with Auto-stirringPolargraphic DO probe for field or labPolargraphic DO probe for field or lab
 RDO Dissolved Oxygen field probePolargraphic DO probe for BOD  w/Auto-stirringPolargraphic DO probe for field or labPolargraphic DO probe for lab applications
 
  • No warm-up time
  • No membranes
  • Replace sensor cap only
  • No oxygen consumption
  • SS Guard included
  • For lab BOD
  • One hand self-stirring
  • Thermally compensated
  • For lab and field applications
  • Cable lengths from 1.5 to 20 meters
  • For lab applications
  • Works on pH meters with BNC
Product SKU number087010MD
087020MD
086030MDA,C
083005MDA970899WP1*
DO Operating Range 0-20mg/L
0-200%
------
Accuracy +/- 0.1mg/L
(0-8mg/L)
+/- 0.2mg/L
(8-20mg/L)
+/- 0.05 ppm or 2% ----
Response TimeT90 = 30 seconds
T95 = 60 seconds
T90 = 10 seconds
T95 = 15 seconds
T90 = 10 seconds
T95 = 15 seconds
T95 = 30 seconds
Temp. Range0°-50°C0°-50°C0°-50°C0°-45°C
Oxygen Consumption--0.008mg/h /mg/L
@ 20oC
0.008mg/h /mg/L
@ 20oC
0.1mg/h
Connector TypeMiniDINMiniDin, 3.5mm Phono
13 Pin DIN
MinDINBNC Waterproof
Accessories
087001 Replacement RDO sensor cap.
 
087002Stainless steel protective guard, for RDO probe.
 
087003 Calibration sleeve for RDO probe.
080515 Replacement membrane cap.
080515 Replacement membrane cap.
 
080514 Polarographic electrolyte solution.
970801 1 pre-filled membrane cap.
Key information
Dissolved Oxygen probe connectors
 
 1 BNC Waterproof Connector
 A MiniDIN Connector
 C 8 Pin Waterproof DIN connector (A Series)
 G 3.5 mm Phono Tip Stirrer Jack Connector
* Accuracy – ±0.05 ppm or 2 % of reading, whichever is greater
   Battery Life – One year based on 4 hours/day operation


  Increase your productivity with dissolved oxygen probe accessories
  See our complete list of dissolved oxygen probes

^ Top  


Differences between Thermo Scientific Orion polarographic DO and optical DO

 

Polarographic Probe

Optical Probe

MaintenanceReplace electrolyte and polish cathode ~ every 2 months. Clean probe as neededClean, probe, cap and optical window as needed
StorageIn moist calibration sleeve, long term, remove membrane cap and store dryIn moist calibration sleeve
MembraneChange as needed, ~ every 2 monthsMust be replaced every one or two years depending on model. Do not use with solutions that contain organic solvents
ElectrolyteChange as needed, ~ every 2 monthsNone required
Warm-Time RequiredRequired if just connected to meter (30-60 minutes)None required
StirringRequiredNot necessary
InterferencesOzone, sulfides, sulfur dioxide, nitrous oxide and carbon monoxideAlcohols greater than 5%, hydrogen peroxide greater than 3%, sodium hypochlorite greater than 3%, gaseous sulfur dioxide and gaseous chlorine

^ Top  


RDO Optical DO Probe Accessories

Cat. No.

Description

087001Replacement RDO optical cap
087002Stainless steel protective probe guard for RDO probes
087003Calibration sleeve for RDO probes

View all electrochemistry meter accessories ›

^ Top  


Polarographic DO Solutions and Accessories

Cat. No.

Description

080513Maintenance kit, includes electrolyte solution, polishing disk and 2 membrane caps for 083005MD, 083010MD, 083025MD, 086030MD, 083005A, 083010A,083005D
080113Maintenance kit, includes electrolyte solution, polishing disk and 2 membrane caps for 083005MD, 083010MD, 083025MD086030MD, 083005A, 083010A, 083005D
0805151 membrane cap for 083005MD, 083010MD, 083025MD, 086030MD, 083005A, 083010A, 083005D
0810033 membrane caps for 080510MD, 081010MD
9708011 pre-filled membrane compatible with previously discontinued probes 970899WP, 970800
080514Polarographic electrolyte solution for 083005MD, 083010MD, 083025MD, 083060MD, 086030MD, 083005A, 083010A, 083005D, 086020A, 081010F, 080510MD, 081010MD, 081010
080017Calibration sleeve for all DO probes excluding AUTO-STIR probes and RDO probe
086021ACalibration chamber/stand compatible with previously discontinued probes 086020A and 086030MD
080360BOD adapter for 083005MD, 083010MD, 083025MD, 083005A083010A083005D
080160BOD adapter for 081010MD
9708032 batteries for 970899WP
080045Stainless steel and plastic protective probe guard for 080510MD, 083005MD, 083010MD, 083025MD083005A, 083005D, 083010A

^ Top  

View all electrochemistry meter accessories ›


Complete your dissolved oxygen measurements faster

We offer a range of dissolved oxygen (DO) measurement instrumentation and accessories designed to meet your standards for performance and price. Our DO meters, DO probes, and standards are designed to offer maximum repeatability and accuracy in your DO readings

 
The accuracy and reliability of your dissolved oxygen measurements depend on the instrumentation you use. Learn more about how you can identify the best match based on your required features, performance, specifications, and budget
 
We offer buffers, electrode storage solutions, electrode cleaning solutions, lab buffer kits, and electrode filling solutions for your conductivity measurement needs. Find the buffers and solutions that you need for your process.
Can dissolved oxygen levels be measured at high altitudes?

This Smart Note describes how you can perform accurate and repeatable dissolved oxygen measurements at altitudes of 4,500 meters above sea level.

Download

Support

Knowledge Base: Certificates of Analysis and SDS for Orion, ROSS, AQUAfast, AquaMate, and AquaSensors products.

Orion Meters Software and Upgrades
Thermo Scientific Orion benchtop and portable meters are designed to help deliver accurate, consistent results, day after day. Boost productivity by upgrading your software today.

Find your software

Style Sheet for Global Design System
Style Sheet for Global Design System