Model 901 Headspace Oxygen Analyzer

The Quantek Model 901 is a battery-operated, portable headspace oxygen analyzer.

Other headspace analyzers require a new sensor every 1-2 years. The Model 901 is equipped with a long life sensor, expected to last 5+ years. The Model 901 is trusted by small and large food packagers, producers, and quality control personnel throughout the world.

Use it in the lab, or on the packaging line. Non-technical personnel will find it very easy to use – and at less than 3 pounds, it can be easily transported to other locations.


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SKU: Model 901 Category:
Lead Time: 24-48 hours


The sample probe is tipped with a filter and needle. Simply affix the foam septa to your package, insert the needle through the septa, and press the pump button. Sample is drawn through the probe and into the internal oxygen sensor. The residual oxygen concentration displays within 15-20 seconds.


The Model 901 oxygen analyzer is the market leader for durability, simplicity, and reliability. The initial lower cost, and longer-life sensor, makes it the industry leader in handheld portable headspace oxygen analyzers.


The sensor is unaffected by high levels of background gases such as nitrogen or carbon dioxide, and unaffected by trace hydrocarbons. You can use the Model 901 for applications where oxygen level is very high (50 to 100%) without overloading the sensor. The expected electrochemical sensor life is typically 5 years, unlike other analyzers with an electrochemical sensor that last 1-2 years.


Sample with confidence using our liquid blocking filters – all contamination is blocked from entering the analyzer, reducing downtime significantly.


U.S. and Canadian customers: Submit a quotation request, email us at [email protected], or call us at (508) 839-3940.
visa-mastercard american_express Major credit cards accepted; net 30 terms granted upon credit review.

International customers: Contact us to be forwarded to a sales representative in your country.

Expected Lifetime (oxygen) 4-5 years
Oxygen Range 0.0 to 100%
Oxygen Sensitivity 0.1%
O2 Resolution 0.1%
Analog Output Not Available
Resolution 0.1% Oxygen
Accuracy : +/- 0.1% (below 10% oxygen).
Drift less than 0.4% per year
Oxygen Sensor Type Proprietary electrochemical cell, expected lifetime 4-5 years
Response Time 15 seconds to T95
O2 Sensor Lifetime 4-5 Years
O2 Sensor Body ABS Resin
Sample Connection Sample Probe
Sample Method Pump
Sample Pump Internal, draws ~5cc/sec, with 2-12 second adjustable timer (on side of unit)
Pump Timing 2-12 second adjustable pump time, potentiometer on side of analyzer
Minimum Sample Required 10cc
Sampling Assembly Probe with female luer connection for filter and needle, low volume PTFE tubing
Oxygen Calibration Controls SPAN adjustment, zero adjustment
Instrument Calibration Calibrates with room air; SPAN adjustment on side; ZERO adjustment on side
Exhaust port Vents to air
Power Supply Four "AA" NiMH rechargeable batteries; auto shut-off after 45 minutes idle. 100-240V (50-60Hz) Charger included, with US or international interchangeable plug adapter (upon request)
Backup Power Four "AA" alkaline batteries (not included)
Battery Operation Included
Input Voltage 100-240V, 50-60Hz
Battery Life 10-14 hours before recharging
Measures: O2, CO2 O2
Form Factor Portable
Size 8 x 4 x 1.8 in. (200 x 100 x 40 mm)
Weight 1 lb. (450 gms)
Warranty 2 years, parts and labor
Standards CE, RoHS
Included Consumables 200 foam septas, 2 luer fit needles, 2 particulate filters, 2 liquid block filters
Included Documentation Owners manual (includes operating instructions with detailed calibration instructions, calibration certficate, precautions), NIST calibration certificate
Origin of Goods Our products are manufactured in the U.S.A.
Products by Gas Oxygen
Products by Applications Headspace / Package
Print Datasheet
901 Calibration Procedure
901 Protection + Usage Tips
901 Quick Tips - Start of Shift

Includes everything you need to begin sampling:

  • Sample probe
  • Starter pack of 200 foam septas
  • 2 needles.
  • 2 small moisture and particulate blocking filters,
  • Charger – (International compatible 100-240V, with EU / AUS / UK / NA mains prongs)