OX-TRAN 2/22 OTR Analyzer

The OX-TRAN 2/22 series are MOCON’s most popular OTR analyzers for testing mid to very high-level barriers

  • Oxygen Permeation Analyzer
  • Test Films and Packages
  • Complies with ASTM D3985
  • 2 Cell Cartridge System
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The OX-TRAN 2/22 series of high-performance analyzers can test the Oxygen Transmission Rate (OTR) on both films and packages from low to very high-level barriers. The oxygen permeation analyzers for packages and films are easy to use and offer the shortest test times available in the market. They feature 2 independent cells with changeable horizontal test cartridges that allow a wide variety of sample sizes and types to be easily and accurately tested.


Highest Accuracy

  • Patented COULOX® sensor is the only absolute Coulometric sensor on market, never requiring calibration
  • Lowest detection levels of any instrument available down to 0.0005 cc/(m2*day) (10X model)
  • Fully automated temperature, flow and RH controls simplify testing and provide unparalleled repeatability

Best Throughput

  • Industries fastest sensor response time allows shorter overall test times
  • Removable test cartridges allow fast easy sample preparation
  • Automated test method can start a test by a single press of a button
  • TruSeal gas flushed perimeter sealing can eliminate the need for individual zero in many tests thus shortening overall test times

The 2/22 Series use MOCON’s patented COULOX absolute (intrinsic) coulometric sensor requires no calibration and is the base for the ASTM standard D3985. It is the only instrument family proven to meet its precision and bias requirement through independent and 3rd party testing.


This family of highly accurate instruments has 3 models each having a different factor of lower detection limits.


  • H Model (common barriers) – the most popular detection range from 0.05 to 200 cc/(m2*day)
  • L Model (high barriers) – is able to achieve a factor of 10 lower than the H Model providing a range from 0.005 to 200 cc/(m2 * day)
  • 10X Model (ultra-high barriers) – has the industry’s lowest detection level at 100 times lower than the H model providing a range from 0.0005 to 200 cc/(m2*day).

Their upper detection limit of 200 cc/(m2*day) can be extended with any of the models with the use the reduced area film test cartridge (factor x9), atmospheric oxygen in place of the normal 100% O2 (factor of 4.8) or various size masking.The series has industry leading features such as removable and interchangeable horizontal test cartridges, easy to use touch screen operator interface, and fully automated testing providing higher throughput in the lab.


For more than 25 years, MOCON’s OX-TRAN series of instruments have been the most trusted and longest lasting on the market. From simple single layered barriers to complex multi-layered barriers, the OX-TRAN 2/22 series is the right choice.

Removable Cartridges
  • Easy sample prep on the benchtop
  • One button release and loading
  • Pneumatic clamping provides more repeatable results
  • Interchangeable cartridge options extend the range and flexibility of the analyzer without tools while maintaining arcuate results
  • Cartridge options include: Reduced area to extend testing range without masks, improved accuracy testing of paper-based barriers, adaptors for remote testing of packages or extreme conditions, and custom designs for unique testing requirements.
  • Gas flush of sample mounting seal protects chamber integrity
  • Lowers background level reducing need to run individual zero
  • Shortened testing time increases throughput
  • More repeatable results
Control Features
  • Fully automated flow, temp, & RH control throughout tests
  • Automatic test method development and recommendations
  • Programmable multi-test sequencing
  • Final test report printing and export
  • Built-in sensor protection
Touchscreen Interface
  • Intuitive automated operation requires less training
  • Built in multi-level user management and data security
  • Event log & trouble shooting guide
  • Save on valuable lab space by eliminating need for PC
COULOX® Sensor
  • Short exam times reduces overall test time to increase throughput
  • No sensor calibration required
  • Longer sensor life than others on the market
  • More accurate and repeatable results vs. sensors that require calibration
  • Intrinsic coulometric sensor fully complies with ASTM D3985
  • Full 100% parts and workmanship warranty for 12 months
  • Exclusive 4-year warranty on the COULOX sensor
Capabilities – Model Specific
Units Model 10x Model L Model H
Test Ranges (50 cm2) cc/(m2 × day) 0.0005 to 200 0.005 to 200 0.05 to 200
cc/(100 in2 × day) 0.00003 to 12.9 0.0003 to 12.9 0.003 to 12.9
cc/(pkg × day) 0.0000025 to 1.0 0.000025 to 1.0 0.00025 to 1.0
Test Ranges (5.6 cm2) cc/(m2 × day) 0.0044 to 1770 0.044 to 1770 0.44 to 1770
cc/(100 in2 × day) 0.00027 to 114.0 0.0027 to 114.0 0.027 to 114.0
cc/(pkg × day) 0.000025 to 9.0 0.00025 to 9.0 0.0022 to 9.0
Test Ranges (5.0 cmmasked) cc/(m2 x day) 0.005 to 2000  0.05 to 2000 0.5 to 2000
Resolution (50cm2 cc/(m2 × day) 0.0001  0.0001  0.0001
Repeatability cc/(m2 × day) 0.0005 or 1%* 0.002 or 1%* 0.02 or 1%*

*whichever is greater

Capabilities – All Models
Ox-Tran 2/22 Series Units
Test Temperature Range 10° to 40°C ± 0.2°C
Controlled RH Testing Range 0 to 90% ± 3%
Film Size 4” x 4” Std, 2”x2” optional
Film Thickness Up to 120 Mil
Film Test Area 50 cm2 std, Option to 5.6 cm2
Other Specifications (all models):

Physical Specifications

  • 5.5” H x 12” W x 23” D (39.4 cm x 30.4 cm x 58.0 cm)
  • 95 Lbs. (43.1 kg)

Electrical Requirements

  • Voltage: 100 – 240 VAC 50/60 Hz
  • Maximum Power Draw: 700 VA
Laboratory Requirements
Temperature Operation 22 °C ± 2 °C
Storage 10 °C to 30 °C
Humidity Operation 20% to 80% RH (non-condensing)
Storage 5% to 85% RH (non-condensing)
Gas Supply Requirements
Carrier Gas Gas Composition Nitrogen/Hydrogen Mix (98%/2%)
Supply Pressure, Nominal 25 PSI, (1.72 Bar), (172 kPa)
Test Gas Gas Composition 100% Oxygen (purity 99.9%)
Supply Pressure, Nominal 25 PSI, (1.72 Bar), (172 kPa)
  • Remote Access and Control (requires optional Perm-Net Light software)
  • Standard Ethernet port (100T)
  • Dual USB 2.0 ports (for connection of keyboard, mouse or memory devices)
Compliance Standards

This product is UL and CSA listed using the ETL mark from Intertek Group plc. and is certified to conform to CE.

Conforms to the following internationally recognized safety standards.

  • IEC 61010-1:2010 Third Edition
  • UL 61010-1:2012 Third Edition
  • CAN/CSA-C22.2 No. 61010-1:2012 Third Edition

Conforms to the following internationally recognized EMC standards.

  • EN 61326-1:2013
  • EN 61000-3-2:2006, A1:2009, A2:2009
  • EN 61000-3-3:2013

Conforms to EU Directive 2011/65/EU RoHS Compliance.

Cartridges & Options
  • Reduced area cartridge
  • Edge effect cartridge
  • Contact lens cartridge
  • Custom Engineered Test Cartridges
  • Package testing adaptor
  • Cert Films 1-4 & set
  • Masks
Service & Support Options
  • IQ/OQ documentation & validation
  • Basic Preventative Maintenance Plan
  • Plus Preventative Maintenance Plan

Packaging Films

  • Monolayer
  • Multi-layer
  • Coated Films
  • Coated Paper/paperboard

Specialty Films

  • Gel/lotions


  • Common food packages
  • Medical packages
  • Bottles/Closures


  • O-Rings
  • Gaskets
Test Standard Compliance

ASTM D3985
ASTM F2622
ASTM F1307
ASTM F1927
ISO CD 15105-2
JIS K-7126-B
DIN 53380-3
GB/T 19789-2005
GB/T 31354-2014

Test Methodology

Following ASTM D3985

Standard Test Method for Oxygen Gas Transmission Rate Through Plastic Film and Sheeting Using a Coulometric Sensor

The test specimen is mounted as a semi-barrier between two chambers at ambient atmospheric pressure. One chamber is slowly purged by a stream of nitrogen and the other chamber contains Oxygen. As Oxygen permeates through the film into the nitrogen carrier gas, it is transported to the coulometric detector where it produces an electrical current, the magnitude of which is proportional to the amount of oxygen flowing into the detector per unit of time.

Related Material:
White Paper: Conformance of ASTM D3985 and ASTM F2622