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SX721 Portable pH/ORP Meter Kit

Cat. No.
SX721
https://www.scilogex.com/web/image/product.template/1288/image_1920?unique=436519c

295.00 295.0 USD 295.00 In stock

295.00

Currently Out-of-Stock

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

 Empower your lab with the only accurate, dependable, and easy-to-use ORP meter you need.


Save hours of rework with easy calibration


  Protect data integrity through stable electrodes


  Get more uptime & shrink your cost of ownership 


   Exceed regulatory standards & keep your team happy 

  Whether you’re tackling tight deadlines, ensuring compliance, or scaling lab operations, this workshop meter helps you produce trustworthy data across applications. 
It’s a versatile ph orp meter that’s at home in the lab or in the field. 
Get a smoother day in the lab and an easier night’s sleep with the right tool in your belt.


Suitable for applications in…

 
Water quality testing

 
Food and beverage production

 
Environmental monitoring



Pharmaceutical and
biotech research

 
Chemical manufacturing

Suitable for applications in…

 
Water quality testing

 
Food and beverage production

 
Environmental monitoring



Pharmaceutical and
biotech research

 
Chemical manufacturing



  What solution are you using right now?

If you’re not currently using an ORP meter, you might be…

 

Relying on pH meters alone


It’s easy to think pH is enough. But if you’re missing redox potential, you’re often missing critical insights into how your sample behaves - especially in water treatment or industrial processes.  



Measuring ORP with outdated gear 

 

Maybe you have a decades-old meter prone to calibration drift, ambiguous readings, or slow response times. Technicians waste valuable hours rechecking data or contending with breakdowns.


Leaning on manual test strips
 

Test strips can be quick, but they’re rarely precise - leaving labs vulnerable to inaccurate readings and potential compliance pitfalls. Auditors and managers aren’t impressed by guesswork.

Why your current solution matters  

  • Lab technicians end up staying late recalibrating or repeating tests.
  • Lab managers deal with budget leaks on replacement parts or crisis-level repairs.
  • Lab directors worry about regulatory fines or reputational damage if data doesn’t hold up under scrutiny.

Replace your old solution today


Why switch to an ORP meter from your current solution?


More accurate, reliable data

Older or smaller stir plates often struggle with larger beakers or flasks. The Apera magnetic stir plate with heat delivers:

  • Stay on point. 
    A ph orp meter provides comprehensive insights that pH alone can’t.

  • Fewer surprises. 
    Reliable redox tracking means you catch potential issues before they escalate.
Faster turnaround, less stress

Between constant recalibration and juggling multiple tasks, I had no time left in my day. A newer, portable ORP meter cut my retests by half.

  • Streamlined workflow.
    Quick readings let you handle higher sample volumes without sacrificing accuracy.

  • No more do-overs.
    With stable electrodes, you trust the results the first time.


“ We used to overshoot chemical dosing because our pH-only meter didn’t tell the whole story. With an ORP meter, we can pinpoint optimal redox levels and reduce rework. ”  

      ​    ​   ​- Amelia A, Lab Technician


“ Between constant recalibration and juggling multiple tasks, I had no time left in my day. A newer, portable ORP meter cut my retests by half. ”  

      ​    ​         ​-  Marcus L, Lab Manager

Confident compliance
 ​
  • Regulatory peace of mind.
    EPA, ISO, or local guidelines often demand precise redox monitoring.

  • Reduced paperwork.
    Fewer errors mean fewer red flags during audits and less time spent explaining them.
  Cost savings and budget protection
 
 ​
  • Long-term reliability.
    Invest once in a robust orp meter rather than constantly patching up your older solution.  

  • Reinvest in your team.
    Money saved on repairs can be funneled into training or additional lab upgrades.

Why switch to an ORP meter from your current solution?


More accurate, reliable data

Older or smaller stir plates often struggle with larger beakers or flasks. The Apera magnetic stir plate with heat delivers:

  • Stay on point. 
    A ph orp meter provides comprehensive insights that pH alone can’t.

  • Fewer surprises. 
    Reliable redox tracking means you catch potential issues before they escalate.
Faster turnaround, less stress

Between constant recalibration and juggling multiple tasks, I had no time left in my day. A newer, portable ORP meter cut my retests by half.

  • Streamlined workflow.
    Quick readings let you handle higher sample volumes without sacrificing accuracy.

  • No more do-overs.
    With stable electrodes, you trust the results the first time.

“ We used to overshoot chemical dosing because our pH-only meter didn’t tell the whole story. With an ORP meter, we can pinpoint optimal redox levels and reduce rework. ”  

- Amelia A, Lab Technician


“ Between constant recalibration and juggling multiple tasks, I had no time left in my day. A newer, portable ORP meter cut my retests by half. ”  

 -  Marcus L, Lab Manager

Confident compliance
 ​
  • Regulatory peace of mind.
    EPA, ISO, or local guidelines often demand precise redox monitoring.

  • Reduced paperwork.
    Fewer errors mean fewer red flags during audits and less time spent explaining them.
  Cost savings and budget protection
 
 ​
  • Long-term reliability.
    Invest once in a robust orp meter rather than constantly patching up your older solution.  

  • Reinvest in your team.
    Money saved on repairs can be funneled into training or additional lab upgrades.

You’re investing in a new ORP meter because…?  

You know what your orp meter is used for, and you’re here because something in your lab has changed.  

Updated regulations or client requirements

ISO/EPA or industry-specific rules might now require ORP readings.

Clients may demand documented redox data for their own compliance. 

Frequent frustrations

If your current device is eating up repair costs, constant downtime hurts your lab’s throughput.

Upgrading often proves cheaper than monthly service calls.

Your lab is growing  

New projects. Testing waste streams or treating water for new customers demands more robust water orp meter solutions.

Higher volumes. Rapid growth means you need consistent, efficient measurements across more samples.

New things to do 

Multi-parameter needs. A ph and orp meter in one device for convenience.

Data integration. Newer meters sync with LIMS, reducing manual entry errors and freeing up technicians for higher-level tasks.




Where are Apera ORP meters being used today?  

We build ORP meters for labs that value precision and reliability across diverse applications:  

Water & wastewater treatment
  • Chlorine dosing. Keep disinfectant levels optimal and consistent to meet safe drinking water standards.

  • Effluent monitoring. Satisfy environmental discharge regulations without second-guessing data.
Environmental monitoring 
  • Field testing. A portable orp meter is ideal for on-site checks of rivers, lakes, and groundwater.

  • Research studies. Track redox changes over time to uncover ecological shifts or contamination events.
Industrial & manufacturing 
  • Process control. Redox data is critical for electroplating, chemical production, and even corrosion prevention.

  • Quality assurance. Quick, accurate readings help maintain consistent product quality and reduce waste.
Academic & research labs
  • Teaching redox fundamentals. Instructors rely on robust ph orp meters for demonstrations.

  • Advanced experiments. R&D teams measure redox potential to gain deeper insights into chemical behaviors.
Food & beverage production  
  • Quality control. Monitor oxidation levels during fermentation processes to produce consistent and high-quality products like wine or beer.

  • Brining monitoring. Ensure proper brining solutions to maintain uniform taste and texture in pickled or cured products.

  • Verification. Verify sanitation effectiveness in cleaning processes, such as CIP (Clean-in-Place) systems, to meet food safety standards.
Pharmaceutical & biotech 
  • Redox. Maintain optimal redox conditions in cell cultures, ensuring the viability and accuracy of biological experiments.

  • Oxidative stress. Monitor oxidative stress levels in drug formulations to guarantee stability and efficacy.

  • QC support. Support quality control processes in pharmaceutical manufacturing to meet regulatory requirements.
Chemical manufacturing 
  • Chemical synthesis. Precisely control oxidation-reduction reactions in chemical synthesis for consistent product output.

  • Electroplating. Manage electroplating processes by monitoring redox conditions to achieve desired coating quality.

  • Waste treatment. Optimize chemical waste treatment to minimize environmental impact.
Out in the field 
  • Portable ORP meters are invaluable for:
    • On-site testing in aquaculture farms to maintain healthy ecosystems.
    • Water treatment facilities to ensure compliance with discharge regulations.
    • Environmental monitoring projects, providing instant data for real-time decision-making.



Water & wastewater treatment
  • Chlorine dosing. Keep disinfectant levels optimal and consistent to meet safe drinking water standards.

  • Effluent monitoring. Satisfy environmental discharge regulations without second-guessing data.
Environmental monitoring 
  • Field testing. A portable orp meter is ideal for on-site checks of rivers, lakes, and groundwater.

  • Research studies. Track redox changes over time to uncover ecological shifts or contamination events.
Industrial & manufacturing 
  • Process control. Redox data is critical for electroplating, chemical production, and even corrosion prevention.

  • Quality assurance. Quick, accurate readings help maintain consistent product quality and reduce waste.
Academic & research labs
  • Teaching redox fundamentals. Instructors rely on robust ph orp meters for demonstrations.

  • Advanced experiments. R&D teams measure redox potential to gain deeper insights into chemical behaviors.
Food & beverage production  
  • Quality control. Monitor oxidation levels during fermentation processes to produce consistent and high-quality products like wine or beer.

  • Brining monitoring. Ensure proper brining solutions to maintain uniform taste and texture in pickled or cured products.

  • Verification. Verify sanitation effectiveness in cleaning processes, such as CIP (Clean-in-Place) systems, to meet food safety standards.
Pharmaceutical & biotech 
  • Redox. Maintain optimal redox conditions in cell cultures, ensuring the viability and accuracy of biological experiments.

  • Oxidative stress. Monitor oxidative stress levels in drug formulations to guarantee stability and efficacy.

  • QC support. Support quality control processes in pharmaceutical manufacturing to meet regulatory requirements.
Chemical manufacturing 
  • Chemical synthesis. Precisely control oxidation-reduction reactions in chemical synthesis for consistent product output.

  • Electroplating. Manage electroplating processes by monitoring redox conditions to achieve desired coating quality.

  • Waste treatment. Optimize chemical waste treatment to minimize environmental impact.
Out in the field 
  • Portable ORP meters are invaluable for:
    • On-site testing in aquaculture farms to maintain healthy ecosystems.
    • Water treatment facilities to ensure compliance with discharge regulations.
    • Environmental monitoring projects, providing instant data for real-time decision-making.




Why do your peers prefer this collection to others?

When labs compare our preferred model of Apera orp meter to a standard Milwaukee orp meter, Hanna orp meter, or any leading brand, they want consistent performance and sensible pricing. Our meters match the reliability of these well-known names while often providing a more user-friendly interface, efficient electrode design, and lower long-term maintenance costs.

Core benefits at a glance

 
Stability & accuracy

Durable electrodes stand up to repeated testing. 

Multi-point calibration keeps readings rock-solid. 

 
Ergonomic & intuitive

Clear displays and simple menus mean less training time for your team. 

Lightweight, portable versions for on-site testing. 

 
Flexible data management

Store readings internally or export to a PC/LIMS with minimal fuss.

Automatic logging cuts down on transcription errors 

 
Budget-friendly

Competitive pricing vs. Milwaukee or Hanna.

Replacement parts and electrodes cost less in the long run.


How to choose the right model  

Picking the best orp meter depends on how you plan to use it. What matters most to you? 

Sample volume & throughput

High-volume labs: Look for bench meters with robust memory and automation.

Field work: Consider a rugged, portable orp meter that handles bumps and temperature shifts.

Parameters & calibration options  

Multi-parameter. If you need pH, temperature, or conductivity too, choose a ph and orp meter combo.

Easy calibration. Automatic one- or two-point calibration simplifies operation and ensures reliable readings.

Data logging & connectivity  

Storage capacity. Ample memory ensures you can record multiple tests before uploading.

LIMS integration. USB or wireless connections help streamline data entry and reduce transcription errors.

Total cost of ownership  

Electrode lifespan. Replacement electrode costs add up, so choose durable designs.

Warranty & support. A strong manufacturer’s warranty protects your investment.





  Frequently asked questions about dissolved oxygen meters

An ORP meter measures the oxidation-reduction potential (redox) of a solution, indicating its ability to oxidize or reduce chemical species.

By tracking redox potential, you can optimize disinfection levels, ensure safe drinking water, and maintain compliance with environmental regulations.

A pH meter only measures acidity or alkalinity, while an ORP meter captures redox information. Many labs prefer a ph orp meter that combines both in one device.

Absolutely! Modern portable orp meter models are designed for both field and lab use, offering high accuracy and robust data logging.

Prices vary based on features (multi-parameter, data logging, rugged design). Basic units may start in the low hundreds, while advanced models can exceed $1,000.

Yes. To maintain accuracy—especially if you’re testing high-value or critical samples—regular calibration ensures reliable results.

Everything from municipal water treatment to aquaculture, biotech, and metal finishing. Many ISO and EPA standards reference redox monitoring.

Our solutions include easily replaceable electrodes, along with responsive support for repairs.

Yes! Many labs use a single device for both environmental fieldwork and routine in-house testing.

A basic model might suffice, but be sure to store it properly and calibrate as recommended to keep it accurate.


What determines your ORP meter price?


There’s a ton of variety in the ORP meter price your budget can handle. Entry-level units can be cost-effective if you only need basic functionality. If you’re managing a complex workflow with high compliance demands, you may opt for a more feature-rich ph and orp meter. 

You save budget by combining the two, and the combination also indicates higher build quality. So your initial ORP meter price is often a reflection of your long-term cost of ownership. A higher price at the start is a lower cost of ownership over the lifetime.

Add yours to the cart now


ORP meter calibration, repairs, and replacement parts   

 
Calibration
Standard ORP buffers help ensure accuracy over time. Some models feature one-touch or multi-point calibration for both pH and ORP modes.
 
Repairs
 
Prompt service and support keep you running. Check warranty terms to minimize unplanned expenses.
 
Replacement parts  

Electrodes inevitably wear out. We offer robust, budget-friendly replacements to get you back on track quickly, without major downtime or headaches.

What’s your next step? 

Ready to make redox measurements easier and empower your team with trust? This ORP meter puts accurate results at your fingertips - no guesswork, no endless rework. Whether you’re analyzing municipal water quality, controlling a chemical production line, or guiding a research project, your safe choice is here.

Stop wasting time on unreliable meters or patchwork methods. Deliver fast, consistent, and actionable data for every project in your lab.


Product Specifications

pH
Measurement range (-2.00 to 19.99) pH
Resolution 0.1/0.01 pH
Accuracy ±0.01pH±1 digit
Input current ≤2×10-12 A
Input impedance ≥1×1012 Ω
Temp. compensation range (0 to 100) ˚C (automatic)
ORP
Measurement range (mV/ORP/EH) -1999 mV to 1999mV
Resolution 1mV
Accuracy ±15mV
Other Technical Parameters
Data storage 200 sets
Data content Serial number, measurement value, measurement unit, and temperature
Power Supply Two AA alkaline batteries (1.5V x2)
Dimensions and weight Meter: (65×120×31) mm/180g Complete Kit: (255 x 210x 50) mm/1760g
Quality and safety certification CE, ISO 9001:2015
Working Condition
Working temperature 5 to 35˚C
Working humidity ≤85%
IP rating IP57 water-resistant

Additional Resources and Information

Downloadable PDFs


SX721 User Manual​


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