Measuring dissolved oxygen in the lab or in the field

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.

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Featured probes:

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  Rugged, low maintenance field probe AUTO-STIR probe for BOD applications Durable and accurate DO probes for the lab or field Convert any pH meter into a DO meter
  RDO Dissolved Oxygen field probe Polargraphic DO probe for BOD with Auto-stirring Polargraphic DO probe for field or lab Polargraphic DO probe for field or lab
  RDO Dissolved Oxygen field probe Polargraphic DO probe for BOD  w/Auto-stirring Polargraphic DO probe for field or lab Polargraphic 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 number 087010MD
087020MD
086030MDA,C
086020AG
083005MDA 970899WP1*
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 Time T90 = 30 seconds
T95 = 60 seconds
T90 = 10 seconds
T95 = 15 seconds
T90 = 10 seconds
T95 = 15 seconds
T95 = 30 seconds
Temp. Range 0°-50°C 0°-50°C 0°-50°C 0°-45°C
Oxygen Consumption -- 0.008mg/h /mg/L
@ 20oC
0.008mg/h /mg/L
@ 20oC
0.1mg/h
Connector Type MiniDIN MiniDin, 3.5mm Phono
13 Pin DIN
MinDIN BNC Waterproof
Accessories
087001 Replacement RDO sensor cap.
 
087002 Stainless 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

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Differences between Thermo Scientific Orion polarographic DO and optical DO

 

Polarographic Probe

Optical Probe

Maintenance Replace electrolyte and polish cathode ~ every 2 months. Clean probe as needed Clean, probe, cap and optical window as needed
Storage In moist calibration sleeve, long term, remove membrane cap and store dry In moist calibration sleeve
Membrane Change as needed, ~ every 2 months Must be replaced every one or two years depending on model. Do not use with solutions that contain organic solvents
Electrolyte Change as needed, ~ every 2 months None required
Warm-Time Required Required if just connected to meter (30-60 minutes) None required
Stirring Required Not necessary
Interferences Ozone, sulfides, sulfur dioxide, nitrous oxide and carbon monoxide Alcohols greater than 5%, hydrogen peroxide greater than 3%, sodium hypochlorite greater than 3%, gaseous sulfur dioxide and gaseous chlorine

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RDO Optical DO Probe Accessories

Cat. No.

Description

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

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Polarographic DO Solutions and Accessories

Cat. No.

Description

80513 Maintenance kit, includes electrolyte solution, polishing disk and 2 membrane caps for 083005MD, 083010MD, 083025MD,, 083060MD, 086030MD, 083005A, 083010A, 083005D, 086020A, 081010F
80113 Maintenance kit, includes electrolyte solution, polishing disk and 2 membrane caps for 083005MD, 083010MD, 083025MD, 083060MD, 086030MD, 083005A, 083010A, 083005D, 086020A, 081010F
80515 1 membrane cap for 083005MD, 083010MD, 083025MD, 083060MD, 086030MD, 083005A, 083010A, 083005D, 086020A, 081010F
81003 3 membrane caps for 080510MD, 081010MD, 081010
970801 1 pre-filled membrane cap for 970899WP, 970800
80514 Polarographic electrolyte solution for 083005MD, 083010MD, 083025MD, 083060MD, 086030MD, 083005A, 083010A, 083005D, 086020A, 081010F, 080510MD, 081010MD, 081010
80017 Calibration sleeve for all DO probes excluding AUTO-STIR probes and RDO probe
086021A Calibration chamber/stand for 086020A, 086030MD AUTO-STIR probes
80360 BOD adapter for 083005MD, 083010MD, 083025MD, 083060MD, 083005A083010A083005D
80160 BOD adapter for 081010MD, 081010
970802 BOD stir funnel for 970899WP, 970800
970803 2 batteries for 970899WP, 970800
80045 Stainless steel and plastic protective probe guard for 080510MD, 083005MD, 083010MD, 083025MD, 083060MD, 083005A, 083005D, 083010A
81045 Plastic protective probe guard for 080510MD, 083005MD, 083010MD, 083025MD, 083060MD, 083005A, 083005D, 083010A

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Dissolved Oxygen
Benchtop Meters

dissolved oxygen benchtop meters

The accuracy and reliability of your pH and ORP measurements depend on the instrumentation you use. Learn more about how you can identify the best match based on your required features, performance, specifications & budget.

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Dissolved Oxygen
Portable Meters

dissolved oxygen portable meters

Our portable meters are rugged and waterproof, and provide dependable performance in the field without sacrificing accuracy or reliability.


 

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Dissolved Oxygen
Solutions

buffers and solutions

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.

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Using high-quality solutions to calibrate and maintain your sensors is the best way to ensure your data is both accurate and reproducible. Learn more about why high-quality solutions deliver correct measurements every time.  

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

 

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Support

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

Orion Meters Software and Upgrades
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