PERMATRAN-W 3/34 WVTR Analyzer

The PERMATRAN-W 3/34 Series of permeation analyzers are MOCON’s most trusted and reliable instruments for WVTR testing on low to high-level barriers.

  • Water Vapor Permeation Analyzer
  • Test Film and Packages
  • Complies with ASTM F1249
  • 2 Cell Cartridge System
SKU: 14f92940b6aa Categories: , ,


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
Capabilities – Model Specific
Units Model 3/34 H Model 3/34 G
Test Ranges (50 cm2)
g/(m2*day) 0.05 to 100 0.005 to 100
g/(100 in2*day 0.003 to 6.45 0.0003 to 6.45
Test Ranges (5.6 cm2)
g/(m2*day) 0.44 to 890 0.044 to 890
g/(100 in2*day) 0.027 to 57.2 0.0027 to 57.2
Test Ranges (5.0 cm2 masked) g/(m2*day) 0.5 to 1000 0.05 to 1000
Resolution (50cm2 g/(m2*day) 0.0001 0.0001
Test Range – Package g/(pkg*day) 0.00025 to 0.50 0.000025 to 0.50
Repeatability g/(m2*day) 0.05 or 2%* 0.005 or 2%*
Temperature Control Range °C 20 to 40 ± 0.2 10 to 40 ± 0.2
Humidity (RH) Control Range
Film Cell, Test Gas
 % RH 100% and 50% to 90% RH ± 3 RH 100% and 5% to 90% RH ± 3 RH

*whichever is greater

Capabilities – All Models
PERMATRAN 3/34 Series Units
Film Size 4” x 4” Std, 2”x 2” optional
Film Thickness Up to 120 Mil
Film Test Area 50 cmstandard cartridge
5.6 cmcartridge – optional
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
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 (99.7% N2 or better)
Test Gas Supply Pressure, Nominal 29 PSI, (2.0 Bar), (200 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
  • 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

  • Bandages
  • Gel/lotions
  • Solar back sheets
  • breathable for Diapers
  • Battery separation membrane


  • Common food packages
  • Medical packages
  • Bottles/Closures


  • Solar panels
  • Windows
  • OLED devises
  • Other Electrical applications


  • Medical
  • Optical


  • O-Rings
  • Gaskets
Test Standard Compliance

ASTM F1249
JIS K7129
ISO 15106-2
GB/T 26253-2010
GB/T 31355-2014

Test Methodology

Following ASTM F1249

Standard Test Method for Water Vapor Transmission Rate Through Plastic Film and Sheeting Using a Modulated Infrared Sensor

Summary of Test Method

A dry chamber is separated from a wet chamber of known temperature and humidity by the barrier material to be tested. The dry chamber and the wet chamber make up a diffusion cell in which the test film is sealed. Water vapor diffusing through the film mixes with the gas in the dry chamber and is carried to a pressure-modulated infrared sensor. This sensor measures the fraction of infrared energy absorbed by the water vapor and produces an electrical signal, the amplitude of which is proportional to water vapor concentration. The amplitude of the electrical signal produced by the test film is then compared to the signal produced by measurement of a calibration film of known water vapor transmission rate. This information is then used to calculate the rate at which moisture is transmitted through the material being tested.