PERMATRAN-W 3/34 WVTR Analyzer

The PERMATRAN-W 3/34 high-tech analyzers can test the Water Vapor Transmission Rate (WVTR) on both films and packages from low to high barriers. They feature 2 independent cells with interchangeable horizontal test cartridges that allow a wide variety of sample sizes and types to be easily and accurately tested.

Highest Accuracy

  • MOCON’s patented modulated infrared sensor is the only modulated sensor system on market meeting ASTM F1249
  • Low detection levels down to 0.005 g/(mx day)
  • 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 absolute zero in many tests thus shortening overall test times

The PERMATRAN-W 3/34 WVTR analyzer is easy to use and offers the shortest test times available in the market. It uses the MOCON’s patented long life modulated IR sensor which is the basis for the ASTM standard F1249.


This family of highly accurate instruments has 2 models each having a different factor of lower detection limits.

  • H Model (common barriers) - the most popular detection range from 0.05 to 100 g/(m2 x day)
  • G Model (high barriers) - is able to achieve a factor of 10 lower than the H Model providing a range from 0.005 to 100 g/(m2 x day)


The upper detection limit can be extended with the use the reduced area film test cartridge (factor x9), 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 with less training.

For more than 25 years, MOCON’s PERMATRAN 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 PERMATRAN-W 3/34 is the right choice for reliable WVTR testing.

Removable Cartridges
  • Easy sample prep on the benchtop
  • More consistent loading
  • One button release and loading
  • Pneumatic clamping provides more repeatable results
  • Specialized cartridge options allow extend range testing without masks, improved accuracy testing paper-based barriers and custom fit designs for unique packages or products
  • Eliminate Individual Zero
  • Reduced testing time (increase throughput)
  • More repeatable results
Automated Control Features
  • Flow, Temp, & RH control
  • Test Process Development and Recommendations
  • Programmable Test Sequencing
  • Test report printing and export
  • 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
Modulated IR Sensor
  • Short exam times reduces overall test time to increase throughput
  • Longer sensor life than others on the market
  • Accurate and repeatable results
  • Most trusted modulated IR sensor that fully complies with ASTM F1249
  • Full 100% parts and workmanship warranty for 12 months
  • Exclusive 4-year warranty on the Modulated IR sensor
  • PERMATRAN-W® 3/34 H
  • PERMATRAN-W® 3/34 G

Extensive Testing Capabilities and Applications

The accuracy and wide testing capability of the 3/34 Series make it an ideal WVTR instrument for both research and development or production support laboratories. It has the capability test flat barriers such as mono-layer to multi-layer films, coated films to coated paper board, and specialty applications such as gels or lotions. With the optional adapter cartridge, it can also test additional applications such as complete or partial packages, flexible or rigid containers, bottles and/or closures, and seals in the form of O-rings or gaskets. The interchangeable cartridges also work with other Next Generation AMETEK MOCON permeation analyzers. These purpose-built cartridges increase accuracy, extend the range, or make it possible to test unique or difficult samples.

Request A Quote Download Brochure