The AQUATRAN 3 analyser is the industries most trusted WVTR instrument for high to ultrahigh-level barriers because it can measure each molecule of water vapor entering the sensor. The analyser is easy to use and offers the lowest detection levels available in the market. It features 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 and Repeatability

  • Patented AQUATRACE® sensor is the most trusted absolute Coulometric sensor on market that never need calibration
  • Ultra-Low detection level down to 0.00005 g/(m2*day)
  • Fully automated temperature, flow and RH controls simplify testing and provide unparalleled repeatability
  • TruSeal gas flushed perimeter sealing system reduces potential environmental water vapor ingress providing accurate results

Demanding Applications

  • OLED flexible displays and electronics applications that require ultra-high barriers to moisture
  • High moisture barrier packages for Pharmaceutical industry

The AQUATRAN 3 analyser can test the Water Vapor Transmission Rate (WVTR) on both films and packages from high to ultra-high barriers. It uses the MOCON’s patented long life AQUATRACE WVTR sensor which has a linear output throughout the entire measurable range. This guarantees highly accurate and repeatable results throughout it’s a wide detection range from 0.00005 to 5 g/(m2*day).

The upper detection limit can be extended with the use the reduced area film test cartridge (factor x9), or various size masking.

The analyser 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 15 years, MOCON’s AQUATRAN series have been the most trusted and longest lasting on the market. For complex multi-layered high barriers or sensitive electronics and panels, the AQUATRAN 3 is the right choice for advanced WVTR testing.

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.
  • 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 & troubleshooting guide
  • Save on valuable lab space by eliminating the need for PC
  • Ultra-low level of detection down to 5 x 10 -5 g/(m2*day)
  • Longer sensor life than others on the market
  • Accurate and repeatable results
  • Most trusted P2O5 sensor that fully complies with ASTM F3299 and ISO 15106-3
AQUATRAN 3 OTR AnalyserUnits
Temperature Control Range5 °C to 50 °C ± 0.2 °C at 100% RH
10 °C to 40 °C ± 0.2 °C at 5 to 90% RH
Humidity Control, Film Cell, Test Gas100% and 5% to 90% RH ± 3 RH
RH Film Cell-to-Cell Uniformity± 3 RH
Test Range, Film, Std 50 cm2 sample0.05 to 5000 mg/(m2 • day)
0.0032 to 322.6 mg/(100in2 • day)
Test Range, Package0.00025 to 25 mg/(pkg • day)
Resolution, Film0.01 mg/(m2 • day)
0.00065 mg/(100in2 • day)
Resolution, Package0.00005 mg/(pkg • day)
Repeatability, Film±0.050 mg/(m2 • day)
±0.0032 mg/(100in2 • day) or 1% of value, whichever is greater
Repeatability, Package0.00025 mg/(pkg • day) or 1% of value, whichever is greater
Film Size4” x 4” Std, 2”x2” optional
Film ThicknessUp to 120 Mil
Film Test Area50 cm2 std, Option to 5.6 cm2
Carrier GasNitrogen

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
TemperatureOperation22 °C ± 2 °C
Storage10 °C to 30 °C
HumidityOperation20% to 80% RH (non-condensing)
Storage5% to 85% RH (non-condensing)
Gas Supply Requirements
Carrier GasGas CompositionNitrogen (99.9999% N2 or better)
Supply Pressure, Nominal29 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
  • Custom Engineered Test Cartridges
  • Package Testing Adaptor
  • Cert Films 2-4,
  • Masks
  • PermWare data collection, data management and instrument status dashboard
  • Remote viewing software from a PC – PermNet Lite
  • 21 CFR Part 11 user and data security

Packaging Films

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

Specialty Films

  • Solar back sheets


  • Medical packages
  • Bottles/Closures


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


  • Medical
  • Optical


  • O-Rings
  • Gaskets
Test Standard Compliance

, JIS K7129-3
ISO 15106-3
GB/T 21529-2008

Test Methodology

Following ASTM F3299-18;

Standard Test Method for Water Vapor Transmission Rate Through Plastic Film and Sheeting Using and Electrolytic Detection Sensor (Coulometric P2O5 Sensor)

Summary of Test Method
1. 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 test cell in which the test film is sealed. Water vapor permeating through the film mixes with the dry carrier gas in the dry chamber and is carried to an electrolytic sensor. The carrier gas is passed through the sensor where water vapor it holds is absorbed by the phosphorous pentoxide (P2O5). Direct current, applied to the electrodes of the sensor, dissociates the water into hydrogen and oxygen. Two electrons are required to electrolyze each water molecule, and the current in the cell represents the number of molecules dissociated per unit time.