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DO850 Portable Optical Dissolved Oxygen Meter

Cat. No.
DO850
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998.00 998.0 USD 998.00 In stock

998.00

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For more information please call +1 (860) 436-9221 or email us at info@scilogex.com

Accurate, reliable, and easy-to-use dissolved oxygen meters for every laboratory.

 
Save hours of rework with easy calibration

 
Prevent errors with notoriously reliable sensors  

 
Spend less time troubleshooting and standing around

 
  Streamline processes & cover more applications 


 Whether you’re measuring oxygen levels in water samples, optimizing fermentation processes, or ensuring compliance with regulatory standards, you’re thinking about precision. 
Our dissolved oxygen meters are that and more. They reduce downtime vs your current models, your technicians spend no time learning them, and the data collection keeps everyone accountable with almost no time spent on administrative work. This is the DO meter you want.


Models suitable for…

 
Aquaculture and marine research  


Industrial process monitoring (including food & bev)



Microbiology & cell culture testing
 
Educational & research laboratories  



How is your lab measuring dissolved oxygen right now?

  
You’re using an older dissolved oxygen meter

Older doesn’t mean bad. But if you’re here, it means something’s missing. And we have it.  

  
You’re using traditional methods

The problem with chemical testing, like Winkler titration, is that it’s labor intensive, and it’s prone to user error.

   
You’re measuring indirector 

If you’re measuring BOD and inferring oxygen levels, it means you weren’t previously all that concerned with DO. But you are now…

  
You’re not measuring at
all

You weren’t required to measure dissolved oxygen until today, but your requirements have changed and it’s time to start.

So what’s changed, requiring your lab to invest in a DO meter?

Your staff or colleagues are asking for it

Lab technicians are the backbone of your workplace. Empower them with dissolved oxygen meters designed to remove tedium, reduce frustrations, and make them more satisfied with their jobs. 

When your team has the right tools, they can focus on delivering accurate, high-quality results without unnecessary interruptions.

Why lab staff prefer this dissolved oxygen meter  

  • It’s less frustrating than others. No complicated interfaces and inconsistent readings. It’s intuitive and delivers reliable results every time.
  • Staff feel speedy. It’s designed to fit into the workflow, not shoehorn you into its own.
  • Its a positive step for morale. Providing technicians with dependable, user-friendly tools improves performance and increases job satisfaction.  

A better experience for your team, better results for your lab

When lab technicians have access to tools they trust, the whole lab benefits. Accurate readings, seamless operation, and reduced maintenance mean fewer bottlenecks and more time working cohesively toward your lab’s goals.

Support your lab staff with the tools they deserve


Accuracy is becoming an issue

Accuracy comes from a synergy between the user and the tool. This dissolved oxygen meter handles the tool end, and your team can do the good work it’s capable of.

Why accuracy matters for your lab


Errors cost time

 Every time a measurement has to be rerun it costs your lab budget. Accuracy saves money.


Your reputation is on the line

When you need to report to your boss, are you sweating 
or not?


Accountability matters 

Numbers don’t lie. You know you’re insulated from errors when your tools are accurate and data secure.

Regulatory compliance is stressful

Staying compliant doesn’t have to be stressful or full of administrative burden. Our dissolved oxygen meters are reliable and audit-ready, so you’re always ready for a close look at what’s going on in the lab.

How we help you stay compliant 

  • Regulation-ready accuracy. Meet and exceed EPA, WHO, and ISO standards with trusted performance.
  • Streamlined documentation. Built-in compliance tools make calibration tracking and record-keeping effortless.

Confident audits. Equip your lab with reliable tools that ensure you’re always prepared for inspections.

What our customers say

"I spend a lot less time on manual documentation since investing in the DO meters."

  ​– Emma R., Environmental Lab Manager 

What our customers say

"I spend a lot less time on manual documentation since investing in the DO meters."

​   ​– Emma R., Environmental Lab Manager 


You’re searching for efficiencies and think a dissolved oxygen meter is the solution 

 
It probably is! Our dissolved oxygen meters help streamline your processes with fewer manual steps and fewer opportunities for error. 


They also reduce downtime versus comparably priced options (because they’re super durable), and help your team achieve more without sacrificing accuracy.

How does this actually speed up your processes?  

 

Fast response times and streamlined interfaces reduce standing around time.



Durable, 
low-maintenance meters mean less time troubleshooting and more productive time for your team.

 

Get more manual processes out of your workflow. It’s a fraction of the time traditional DO methods require.


Dig into new projects fast 

Growing into new research areas or industries requires tools that can adapt to the challenge. 

Your next dissolved oxygen meter is built for versatility, supporting a wide range of applications from aquaculture to environmental science.

Get a tool that evolves with your focus

  • Use it anywhere you work. It’s suited for lab, field, or industrial testing.
  • Don’t hold yourself back. Go where your application leads you and know that you won’t have to invest new budget with every new insight.

Share the cost with other departments. From microbial studies to wastewater treatment, share the cost (but good luck scheduling!).  

 

"We started using these meters for aquaculture research, and they’ve become a critical part of our lab’s toolkit."

​​​​- 
Dr. Alan M., Research Director


You want to build trust with your stakeholders 

Stakeholders trust your lab to provide accurate, actionable data. Our dissolved oxygen meters ensure you can consistently meet those expectations with high-quality, reliable measurements.

Why your stakeholders trust this dissolved 
oxygen meter

  • They love the precision, and the repeatability gives them confidence in your work.
  • They’re impressed by data, and collecting data is incredibly easy with this DO meter.   
  • They can understand how it works and why it’s a benefit to you.

You don’t only answer to yourself. Choosing the right tools makes all the difference in your high level relationships. So make the easy choice.  

Impress your stakeholders today


You never get the budget you want, so every investment counts

You have to make hard choices with every bit of budget. For many lab managers and directors, every purchase is a question of value. Value is a mix of purchase cost, ongoing costs, maintenance and human burden, and impact on work objectives. This is a safe choice for budget conscious managers.  


Where does your return on investment come from?


Low maintenance costs

Durable design means fewer repairs and replacements.


Reliable day-in-day-out performance  

Durable design means fewer repairs and replacements.

 
Speed

It often comes down to getting things done fast. This is the tool for the job.  

Invest wisely

  With our meters, you’re not just buying equipment. You’re future-proofing your lab with tools built for long-term success.


Keep your lifetime cost of ownership low  




Your team wants tools made by lab techs 

 
When lab staff have a say in equipment choices, you end up with tools that truly work for their needs. 

Our dissolved oxygen meters are designed based on real feedback, so they’re suitable for life inside and outside the lab. 

They’re for the people by the people.

Designed by users 

  • Easy to use. Intuitive interfaces reduce the learning curve for new tools.
  • Easy to depend on. Give your team confidence in their results with every test.
  • Easy to feel good about. Equip your staff with tools that make their jobs easier and more rewarding.  

Better tools form happier teams  

When your staff feels supported, productivity and morale soar. Our technician-friendly meters are the perfect addition to any lab.

Empower your team today


Need to supplement your pipette pumps with additional tools?

Most labs use multiple instruments for various SOPs. Get everything you need in a single order and reduce the logistical burden of keeping your lab supplied.


Environmental monitoring. 
Protecting natural ecosystems

Dissolved oxygen levels are a key indicator of water health. Environmental scientists rely on precise measurements to monitor ecosystems and detect pollution or climate-related changes in water systems.

Why it matters

  • Detect changes in oxygen levels that may affect aquatic life.
  • Identify contaminants that deplete oxygen and harm ecosystems.
  • Track changes in dissolved oxygen linked to environmental shifts.

Equip your environmental research

Our portable dissolved oxygen meters are built for fieldwork, providing reliable, on-site measurements that empower data-driven environmental decisions.




Aquaculture and fisheries. 
Keeping stocks thriving ​

In aquaculture, managed oxygen levels are central to the health and growth of fish and other aquatic organisms. Dissolved oxygen meters help keep conditions safe in your stock.

Why it matters

  • Prevent oxygen depletion that can lead to fish stress or mortality.
  • Maintain ideal conditions to support healthy, fast-growing stock.
  • Boost productivity with precise oxygen monitoring.

Make aquaculture monitoring easier

Our rugged, reliable meters can be used for continuous monitoring in tanks and ponds, giving you peace of mind about the health of your aquatic systems.




Industrial water testing. 
Keep it smooth

​Industries like manufacturing, energy, and wastewater treatment rely on precise oxygen measurements to maintain equipment, ensure compliance, and protect water quality.

Why it matters

  • Monitor dissolved oxygen to avoid corrosion in systems.
  • Stay within regulatory limits for industrial effluent and wastewater.
  • Enhance efficiency in cooling and aeration systems.

Not all meters are suitable for industrial environments

Our meters are built to handle the toughest environments, delivering accurate results in industrial and wastewater applications.




Cellular respiration and microbial activity  

Studying oxygen consumption by cells, microbes, and other organisms provides critical insights into metabolism, fermentation, and pollutant breakdown processes.

Why it matters

  • Measure how cells consume oxygen in real-time.
  • Optimize conditions for microbial growth in bioreactors.
  • Track microbial activity in bioremediation projects.

Do the research that gets published and noticed

Our high-precision meters are designed to measure even small oxygen variations, supporting advanced biological studies.





Education and training for 
new scientists
 

Dissolved oxygen meters are essential tools in academic settings, helping students understand gas solubility, water quality, and biochemical processes.

Why it matters

  • Provide real-world experience with modern analytical tools.
  • Show the impact of oxygen levels on aquatic and cellular systems.
  • Train students to use industry-standard equipment.

At home in the classroom

Our meters are durable, intuitive, and commonly used in educational labs.




Beverage and brewing   

In the beverage industry, dissolved oxygen can affect flavor, shelf life, and overall quality. Reliable oxygen monitoring ensures consistency and excellence in production.

Why it matters

  • Control oxygen to avoid off-flavors or spoilage.
  • Deliver consistent results that meet consumer expectations.
  • Optimize brewing and fermentation processes for new products.

Tools for consistent quality

These dissolved oxygen meters deliver the precision needed for beverage and brewing applications, ensuring every batch meets your standards.




Dissolved oxygen meter for wastewater treatment studies   

Dissolved oxygen is critical for wastewater treatment, helping to break down organic matter and maintain the efficiency of aeration systems.

Why it matters

  • Measure oxygen levels to ensure optimal conditions for microbes.
  • Prevent inefficiencies that can lead to regulatory violations.
  • Ensure treated water meets quality standards before discharge.

A common solution in wastewater applications

Our meters are engineered for reliability in wastewater applications, delivering accurate data that keeps systems efficient and compliant.




Calibration and validation    

Dissolved oxygen meters aren’t just used for direct testing. They’re essential tools for calibrating and validating other environmental monitoring equipment.

Why it matters

  • Ensure Accuracy: Validate the performance of other instruments.
  • Standardize Data: Maintain consistency across multiple systems.
  • Support Audits: Provide reliable calibration records for compliance.

Reliable calibration tools

Our meters offer precise, dependable readings, making them the go-to choice for calibration and validation needs.



Need to supplement your pipette pumps with additional tools?

Most labs use multiple instruments for various SOPs. Get everything you need in a single order and reduce the logistical burden of keeping your lab supplied.


Environmental monitoring. 
Protecting natural ecosystems

Dissolved oxygen levels are a key indicator of water health. Environmental scientists rely on precise measurements to monitor ecosystems and detect pollution or climate-related changes in water systems.

Why it matters

  • Detect changes in oxygen levels that may affect aquatic life.
  • Identify contaminants that deplete oxygen and harm ecosystems.
  • Track changes in dissolved oxygen linked to environmental shifts.

Equip your environmental research

Our portable dissolved oxygen meters are built for fieldwork, providing reliable, on-site measurements that empower data-driven environmental decisions.




Aquaculture and fisheries. 
Keeping stocks thriving ​

In aquaculture, managed oxygen levels are central to the health and growth of fish and other aquatic organisms. Dissolved oxygen meters help keep conditions safe in your stock.

Why it matters

  • Prevent oxygen depletion that can lead to fish stress or mortality.
  • Maintain ideal conditions to support healthy, fast-growing stock.
  • Boost productivity with precise oxygen monitoring.

Make aquaculture monitoring easier

Our rugged, reliable meters can be used for continuous monitoring in tanks and ponds, giving you peace of mind about the health of your aquatic systems.




Industrial water testing. 
Keep it smooth

​Industries like manufacturing, energy, and wastewater treatment rely on precise oxygen measurements to maintain equipment, ensure compliance, and protect water quality.

Why it matters

  • Monitor dissolved oxygen to avoid corrosion in systems.
  • Stay within regulatory limits for industrial effluent and wastewater.
  • Enhance efficiency in cooling and aeration systems.

Not all meters are suitable for industrial environments

Our meters are built to handle the toughest environments, delivering accurate results in industrial and wastewater applications.




Cellular respiration and microbial activity 

Studying oxygen consumption by cells, microbes, and other organisms provides critical insights into metabolism, fermentation, and pollutant breakdown processes.

Why it matters

  • Measure how cells consume oxygen in real-time.
  • Optimize conditions for microbial growth in bioreactors.
  • Track microbial activity in bioremediation projects.

Do the research that gets published and noticed

Our high-precision meters are designed to measure even small oxygen variations, supporting advanced biological studies.




Education and training for 
new scientists
 

Dissolved oxygen meters are essential tools in academic settings, helping students understand gas solubility, water quality, and biochemical processes.

Why it matters

  • Provide real-world experience with modern analytical tools.
  • Show the impact of oxygen levels on aquatic and cellular systems.
  • Train students to use industry-standard equipment.

At home in the classroom

Our meters are durable, intuitive, and commonly used in educational labs.




Beverage and brewing   

In the beverage industry, dissolved oxygen can affect flavor, shelf life, and overall quality. Reliable oxygen monitoring ensures consistency and excellence in production.

Why it matters

  • Control oxygen to avoid off-flavors or spoilage.
  • Deliver consistent results that meet consumer expectations.
  • Optimize brewing and fermentation processes for new products.

Tools for consistent quality

These dissolved oxygen meters deliver the precision needed for beverage and brewing applications, ensuring every batch meets your standards.




Dissolved oxygen meter for wastewater treatment studies   

Dissolved oxygen is critical for wastewater treatment, helping to break down organic matter and maintain the efficiency of aeration systems.

Why it matters

  • Measure oxygen levels to ensure optimal conditions for microbes.
  • Prevent inefficiencies that can lead to regulatory violations.
  • Ensure treated water meets quality standards before discharge.

A common solution in wastewater applications

Our meters are engineered for reliability in wastewater applications, delivering accurate data that keeps systems efficient and compliant.




Calibration and validation    

Dissolved oxygen meters aren’t just used for direct testing. They’re essential tools for calibrating and validating other environmental monitoring equipment.

Why it matters

  • Ensure Accuracy: Validate the performance of other instruments.
  • Standardize Data: Maintain consistency across multiple systems.
  • Support Audits: Provide reliable calibration records for compliance.

Reliable calibration tools

Our meters offer precise, dependable readings, making them the go-to choice for calibration and validation needs.




Why do your peers prefer this DO meter to others? 

When labs need reliable dissolved oxygen meters, they choose ours for a reason. 

Whether you’re working hands-on with the equipment, managing day-to-day operations, or making high-level decisions, our meters give you the outcomes you want.

For lab technicians. Accuracy and simplicity

Lab techs rely on tools they can trust to deliver accurate results quickly. Here’s why technicians love our dissolved oxygen meters.


  • The interface requires no training.
  • It’s accurate every time, and calibration is easy if it seems out of whack.
  • Probes aren’t easily damaged, so they don’t have to walk on eggshells.  




“I don’t waste time recalibrating or troubleshooting anymore. These meters just work, every time.”


​-  Jordan T., Lab Technician ​


For lab managers. Efficiency and cost control

Lab managers need solutions that balance performance and budget.


  • Faster readings mean faster turnaround times, a metric that matters to most.
  • It’s rarely down or out for repairs, so it’s a logistical burden they don’t have to worry about.
  • Data is easy to track, which keeps everyone accountable.  




“Switching to these meters has been a game-changer. We’re delivering results faster, and my team loves them.”


​-  Elena R., Lab Manager


For lab directors. Compliance and long-term value  

Directors focus on strategic decisions, balancing compliance, quality, and ROI. Here’s why our collection stands out:  


  • It’s aligned with bodies like the EPA and WHO.  
  • It’s a single tool suitable for multiple workflows, so once it’s proven appropriate it cna be deployed across the organization.  
  • It’s all you need for the foreseeable future.




“ Investing in this collection has enhanced our lab’s output and reduced stress across the board. It’s a smart decision every lab should make.”


​-   Dr. Andrew S., Laboratory Director


Why do your peers prefer this DO meter to others? 

When labs need reliable dissolved oxygen meters, they choose ours for a reason. 

Whether you’re working hands-on with the equipment, managing day-to-day operations, or making high-level decisions, our meters give you the outcomes you want.

For lab technicians. Accuracy and simplicity

Lab techs rely on tools they can trust to deliver accurate results quickly. Here’s why technicians love our dissolved oxygen meters.


  • The interface requires no training.
  • It’s accurate every time, and calibration is easy if it seems out of whack.
  • Probes aren’t easily damaged, so they don’t have to walk on eggshells.  


“I don’t waste time recalibrating or troubleshooting anymore. These meters just work, every time.”


​       ​-  Jordan T., Lab Technician ​

For lab managers. Efficiency and cost control

Lab managers need solutions that balance performance and budget.


  • Faster readings mean faster turnaround times, a metric that matters to most.
  • It’s rarely down or out for repairs, so it’s a logistical burden they don’t have to worry about.
  • Data is easy to track, which keeps everyone accountable.  



“Switching to these meters has been a game-changer. We’re delivering results faster, and my team loves them.”


​-  Elena R., Lab Manager

For lab directors. Compliance and long-term value  

Directors focus on strategic decisions, balancing compliance, quality, and ROI. Here’s why our collection stands out:  


  • It’s aligned with bodies like the EPA and WHO.  
  • It’s a single tool suitable for multiple workflows, so once it’s proven appropriate it cna be deployed across the organization.  
  • It’s all you need for the foreseeable future.



“ Investing in this collection has enhanced our lab’s output and reduced stress across the board. It’s a smart decision every lab should make.”


​  ​​-   Dr. Andrew S., Laboratory Director


How to choose the right dissolved oxygen meter

Finding the ideal dissolved oxygen meter for your lab takes just a little thought and a few steps.

1. Think about the applications (obviously)

Different applications require different features. 

  • Lab testing. Prioritize precision and simple calibration for controlled environments.
  • Fieldwork. Look for portable meters with durable, waterproof designs and long battery life.
  • Industrial processes. Choose rugged meters compatible with probes for continuous monitoring.
  • Specialized needs. Ask your provider about compatibility with aquaculture, fermentation, or other niche applications.
Obvious tip: Match the meter’s capabilities to the conditions and precision required for your work.

2. Evaluate the measurement technology 
Dissolved oxygen meters typically use one of two sensor technologies.

  • Optical sensors, which require less maintenance, deliver faster results, and offer excellent stability.
  • Electrochemical sensors (galvanic or polarographic), which are often more affordable but require frequent calibration and maintenance.
Tip: Choose optical sensors for reduced maintenance or electrochemical sensors for budget-friendly options.
3. Think about how simple it is to pick up
Simplicity = productivity.

  • Interface. Look for intuitive menus and clear displays.
  • Calibration. Meters with automatic or simplified calibration save time and reduce errors.
  • Data export. Devices with Bluetooth, USB, or LIMS compatibility make reporting seamless.

Tip: Involve lab technicians in the selection process to ensure the meter fits their workflow.

4. Assess durability and maintenance needs
For long-term value, consider:

  • Build quality. You can feel it when you touch it. Robust designs withstand regular use, especially in demanding environments.
  • Probes. Durable probes reduce replacement costs and downtime.
  • Maintenance. Models with low calibration and maintenance requirements save time and money.

Tip: Check warranty and support options to ensure your investment is protected.

5. Align with budget and ROI 
Balance cost with features to get the best value.

  • Upfront costs. Not the only thing to think about. Opt for a model that fits within your budget without compromising critical features.
  • Long-term savings. Consider maintenance, calibration, and probe replacement costs over time.
  • ROI. Prioritize meters that are going to give you more uptime - and a better return on investment.
Tip: Investing in quality up front pays off by lowering long-term operational expenses.
6. Ensure compliance compatibility 
If your lab operates under strict regulations, select a meter that meets or exceeds industry standards.

  • Regulatory requirements. Look for devices compliant with EPA, ISO, or other relevant guidelines.
Calibration logs. Audit-ready documentation tools simplify compliance reporting.

Tip: Ensure the meter supports the level of traceability your lab requires.




What determines your dissolved oxygen meter price?

Cost isn’t just about the initial purchase - it’s also about long-term value. But that upfront number is always the most visible thing. It’s usually impacted by…  

The sensor

Optical vs. electrochemical sensor

Optical probes often have a higher upfront cost due to their precision and lower maintenance needs. Electrochemical sensors may be more budget-friendly but require more frequent recalibration.

Measurement range & resolution

Advanced accuracy  

Meters offering wider DO ranges and finer resolution typically come with a premium price tag but can handle a broader set of applications.  

Build quality  

Rugged construction  

Lab environments can be demanding. High-grade materials and robust design increase durability, reducing maintenance costs over time.

Calibration & maintenance 

Automation

Advanced calibration routines, self-diagnosing probes, or built-in maintenance alerts streamline operations but can raise the initial investment.  

Data management & connectivity

Integration

Meters equipped with data-logging software, Bluetooth or Wi-Fi connectivity, and compatibility with LIMS often cost more but can significantly improve productivity and traceability.

Brand reputation

Integration

Meters equipped with data-logging software, Bluetooth or Wi-Fi connectivity, and compatibility with LIMS often cost more but can significantly improve productivity and traceability.


  Frequently asked questions about dissolved oxygen meters

A dissolved oxygen meter measures the amount of oxygen dissolved in water or other liquids. It uses either optical sensors or electrochemical probes to detect oxygen levels, providing readings in milligrams per liter (mg/L) or as a percentage saturation. Optical sensors use light-based technology for maintenance-free operation, while electrochemical probes rely on chemical reactions for measurement.

Choosing the right meter depends on your application. For fieldwork, prioritize portability and durability. For lab testing, focus on precision and ease of calibration. Industrial users may need rugged meters for continuous monitoring. Consider your required accuracy, measurement range, and data connectivity options when selecting a meter.

The frequency of calibration depends on the sensor type and usage. Optical sensors typically require less frequent calibration due to their stability. Electrochemical probes need regular calibration, especially in demanding applications or after prolonged use. Follow the manufacturer’s recommendations for best results.

Maintenance involves cleaning the sensor or probe, replacing membranes (for electrochemical sensors), and periodic calibration. Optical sensors generally have lower maintenance requirements. Regular care ensures consistent performance and extends the lifespan of the meter.

Yes, many meters are versatile enough for both environments. Portable models are designed for fieldwork, with rugged, waterproof designs and long battery life. Lab models prioritize precision and connectivity for controlled testing environments. Some devices are hybrid and can handle both settings effectively.

Common issues include sensor drift, probe damage, and calibration challenges. To avoid these:


  • Use the meter according to the manufacturer’s guidelines.
  • Regularly clean and maintain probes to prevent buildup.
  • Opt for optical sensors to minimize drift and reduce calibration needs.
    Selecting a high-quality meter with robust support can also help mitigate these challenges.

 

 

Comparison between electrochemistry DO Sensor and Optical DO Sensor

Polarography or galvanic DO SensorOptical DO Sensor
MeasurementConsume oxygen in measurement-
Unstable Measurements
Adopts Fluorescence technologies, no oxygen being
consumed during test - stable measurements
CalibrationSerious electrode polarization, frequent calibration is needed;
calibration time is long
No polarization; no need to calibrate frequently;
only 2 minutes to calibrate.
PerformanceSlow response, bad repeatability, low accuracy15 seconds response time, good repeatability, high accuracy
LifetimeElectrode membrane need to be frequently replaced;
Electrolyte need to be refilled; short life time
No electrode membrane; no electrolyte;
Service Life>8000 hours


Auto. air pressure compensation


Large backlit screen



Foldable stand allows use
 as a benchtop


Additional Resources and Information

Downloadable PDFs

         
DO850 User Manual 


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