Precision Oxygen & CO₂ Analyzers You Can Trust
Trusted by Fortune 500 companies and used in 92+ countries since 1995
Fast, accurate results for MAP testing, pharmaceutical QC, research, and process monitoring. Our Oxygen and Carbon Dioxide analyzers feature industry-leading sensor longevity and are backed by responsive support from our Massachusetts facility—so you spend less time troubleshooting and more time running your operations.
Precision Oxygen & CO₂ Analyzers You Can Trust
Trusted by Fortune 500 companies and used in 92+ countries since 1995
Fast, accurate results for MAP testing, pharmaceutical QC, research, and process monitoring. Our Oxygen and Carbon Dioxide analyzers feature industry-leading sensor longevity and are backed by responsive support from our Massachusetts facility—so you spend less time troubleshooting and more time running your operations.
Precision Oxygen & CO₂ Analyzers You Can Trust
Trusted by Fortune 500 companies and used in 92+ countries since 1995
Fast, accurate results for MAP testing, pharmaceutical QC, research, and process monitoring. Our Oxygen and Carbon Dioxide analyzers feature industry-leading sensor longevity and are backed by responsive support from our Massachusetts facility—so you spend less time troubleshooting and more time running your operations.
5+ Year O₂ Sensor Life
Fast US Support
Made in USA
2-Year Warranty
Our Most Popular Analyzers
Whether you need portable spot-checking or continuous Oxygen and CO₂ monitoring, these are our customers' top choices. Each instrument is built for accuracy, reliability, and years of dependable service.
Model Q22
Handheld
- Portable O₂ / CO₂ dual gas analysis
- 12-hour battery | Color TFT display
- Perfect for MAP testing & QC spot-checks
Model 906
Benchtop
- CO₂ analyzer for process & research
- Results in 15-20 seconds
- Ranges from 2,000ppm to 100% vol/vol
Model 901
Handheld
- Headspace oxygen analyzer
- Fast, accurate package testing
- Industry standard for MAP verification
Model Q40
Rackmount
- Continuous process monitoring
- 2U rack-mountable design
- Integration-ready for automation
Our Most Popular Analyzers
Whether you need portable spot-checking or continuous Oxygen and CO₂ monitoring, these are our customers' top choices. Each instrument is built for accuracy, reliability, and years of dependable service.
Model Q22
Handheld
- Portable O₂ / CO₂ dual gas analysis
- 12-hour battery | Color TFT display
- Perfect for MAP testing & QC spot-checks
Model 906
Benchtop
- CO₂ analyzer for process & research
- Results in 15-20 seconds
- Ranges from 2,000ppm to 100% vol/vol
Model 901
Handheld
- Headspace oxygen analyzer
- Fast, accurate package testing
- Industry standard for MAP verification
Model Q40
Rackmount
- Continuous process monitoring
- 2U rack-mountable design
- Integration-ready for automation
Shop Oxygen and CO₂ Analyzers
by Application
Find the right analyzer for your application; our instruments are trusted across industries for critical gas analysis.
Food and Beverage (MAP) Package Testing
Biological, Environmental, Industrial, Research, Process
Parts per Million (PPM) Oxygen or Carbon Dioxide
Pharmaceutical / Small Volume
Shop Oxygen and CO₂ Analyzers
by Application
Find the right analyzer for your application; our instruments are trusted across industries for critical gas analysis.
Why Choose Quantek Instruments?
Longer Sensor Life – Our O₂ sensors last 5+ years vs. the industry standard of 1–2 years, resulting in a lower cost of ownership.
Fast Results – Get accurate readings in just 15–25 seconds. No waiting, no downtime.
Fastest Lead Times – Our analyzers ship quickly so your testing is not delayed.
Expert Support – U.S.-based service team responds quickly, with calibrations performed in-house in Massachusetts.
NIST-Traceable Calibration – Every new analyzer and calibration includes a NIST-traceable calibration certificate for confidence in accuracy and compliance.
Proven Reliability – Backed by a 2-year warranty (2× the industry standard) and trusted by Fortune 500 companies worldwide.
Since 1995 | 92+ Countries | Fortune 500 Companies | Made in USA
Trusted by Customers Worldwide
Don't just take our word for it! Here is what our customers say about Quantek Instrument's oxygen and carbon dioxide analyzers.
"Thrilled with the results and your product…We are moving forward with the Q20”
- Steve B. | Assistant Manger of Engineering | Kanha | October 2025
"Thanks for everything. I truly appreciate the quick turnaround”
- Carrie Lauer | Gold Coast Packaging
"It really is a great analyzer. We may need to order another one next year.”
- Brett S. | Principal Engineer | Air Measurement LLC
"Wonderful. Totally appreciate the extra effort! Happy to spend money with that kind of service!”
- Joseph C. | Field Service Supervisor | Thermo Fisher Scientific
Built on 30 Years of Precision & Service
Since 1995, Quantek Instruments has been manufacturing reliable oxygen and carbon dioxide analyzers from our facility in Grafton, Massachusetts. What started with our flagship Model 901 handheld oxygen analyzer has grown into a complete line of precision gas analysis solutions trusted by Fortune 500 companies in over 92 countries.
What sets us apart:
- Longer-lasting sensors – 5+ year O₂ sensor life vs. industry standard 1-2 years
- Best-in-industry warranty – 2-year coverage on all analyzers
- Real people, real support – Call us and someone at our MA facility answers
- Lower total cost of ownership – Competitive pricing, fast service, durable equipment
From food packaging and pharmaceutical quality control to research labs and carbon monitoring projects, we take the time to understand your application and recommend the right solution.
Built on 30 Years of Precision & Service
Since 1995, Quantek Instruments has been manufacturing reliable oxygen and carbon dioxide analyzers from our facility in Grafton, Massachusetts. What started with our flagship Model 901 handheld oxygen analyzer has grown into a complete line of precision gas analysis solutions trusted by Fortune 500 companies in over 92 countries.
What sets us apart:
- Longer-lasting sensors – 5+ year O₂ sensor life vs. industry standard 1-2 years
- Best-in-industry warranty – 2-year coverage on all analyzers
- Real people, real support – Call us and someone at our MA facility answers
- Lower total cost of ownership – Competitive pricing, fast service, durable equipment
From food packaging and pharmaceutical quality control to research labs and carbon monitoring projects, we take the time to understand your application and recommend the right solution.
Leading Oxygen & Carbon Dioxide Analyzer Manufacturer
Quantek Instruments has been manufacturing precision O₂ and CO₂ analyzers since 1995. Our handheld, benchtop, and rackmount gas analyzers are engineered for accuracy and longevity, serving food packaging (MAP testing), pharmaceutical, research, and industrial applications worldwide.
Our analyzers feature advanced NDIR CO₂ sensors with unlimited lifespan and long-life electrochemical O₂ sensors rated for 5+ years. With fast 15-25 second response times, onboard data collection, and EasyCal calibration, Quantek analyzers deliver the reliability and precision your quality control processes demand.
Backed by a 2-year warranty and expert US-based support, our instruments are the smart choice for critical gas analysis applications. From portable headspace analyzers to continuous process monitoring systems, we provide solutions that reduce downtime and operating costs.