OX-TRAN 2/28 H OTR Analyzer

The OX-TRAN 2/28 H Oxygen Permeability Tester with its unique 4 cell capability can test four barrier samples at the same time providing twice the throughput of traditional OTR instruments. The new dual film horizontal cartridge is removable for easy sample preparation and the user-friendly operator interface provides real time status of testing against target limits.

Highest Accuracy

  • Patented Coulox® sensor is the only absolute Coulometric sensor on market, never requiring calibration
  • Low detection levels down to 0.05 cc/(m2*day)
  • Fully automated temperature and flow controls simplify testing and provide unparalleled repeatability

High Throughput

  • Industries fastest sensor response time allows shorter overall test times
  • Dual film removable test cartridges allow testing of 4 samples at a time requiring less space
  • Automated test method can start a test by a single press of a button
  • TruSeal gas flushed perimeter sealing can eliminate the need for absolute zero in many tests thus shortening overall test times

The OX-TRAN 2/28 H high throughput analyzers can test the Oxygen Transmission Rate (OTR) on films from low to high barriers without humidification. It uses MOCON’s patented Coulox absolute (intrinsic) coulometric sensor requires no calibration and is the base for the ASTM standard D3985. This analyzer provides very accurate and repeatable test results within a wide detection range from 0.05 to 200 cc/(m2*day).

The 4-cell capability allows for triplicate testing with or without a reference film in the same test. The option to run a known standard as a control improves the confidence in the results. With 4 cells and its simplified operation, the OX-TRAN 2/28 H is well suited for quality control laboratories performing a high volume of OTR tests.

The analyzer has industry leading features such as removable horizontal test cartridges, fully automated testing providing higher throughput in the lab and a QC test mode with real time display of testing status against target limits. It is available with a touch screen operator interface or without one where the control is via a local computer with the same easy to use color graphic interface.

For more than 25 years, MOCON’s OX-TRAN series of instruments have been the most trusted and longest lasting on the market. The OX-TRAN 2/28 H is the perfect choice for the busy laboratory routinely performing shortened or abbreviated permeation tests.


OX-TRAN 2/28 H


Test Temperature Range

20° to 40°C ± 0.2°C

Controlled RH Testing Range

Dry only

Test Ranges (50cm2)

0.05 to 200 cc/(m2*day)

0.003 to 12.9 cc/(100 in2*day)

Test Ranges (5cm2)

0.5 to 2000 cc/(m2*day)

0.03 to 129.0 cc/(100 in2*day)

Resolution (50cm2

0.0001 cc/(m2*day) 


0.02 or 1%* cc/(m2*day)

Film Size

4” x 4” Std,

Film Thickness

Up to 20 Mil

Film Test Area

50 cm2 std

*whichever is greater

Other Specifications (all models):

Physical Specifications

  • 15.5” 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



22 °C ± 2 °C


10 °C to 30 °C



20% to 80% RH (non-condensing)


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.

Removable Cartridges
  • Dual film cartridge for double the testing capability
  • Easy sample prep on the benchtop
  • One button release and loading
  • Pneumatic clamping provides more repeatable results
  • Extra cartridges can be loaded and staged for testing
  • Eliminate Individual Zero
  • Reduced testing time (increase throughput)
  • More repeatable results
Automated Control Features
  • Store and recall frequently used test methods
  • Initiate complete exam cycle with one button
  • Flow & Temp control throughout test cycle
  • Conditioning mode to increase throughput
  • Test report printing and export with pass, fail or warning test results
  • Sensor Protection
Simple user interface
  • Full color graphic interface shows real time exam status against target limits
  • Available with a color touchscreen on the instrument or connect to a PC
  • Intuitive automated operation requires less training
  • Built in multi-level user management and data security
  • Event log & trouble shooting guide
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 sensor fully complies with ASTM D3985
  • Full 100% parts and workmanship warranty for 12 months
  • Exclusive 4-year warranty on the Coulox sensor

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