PERMATRAN-W® Model 1/50

MOCON’s PERMATRAN-W® Model 1/50 is a low-cost water vapour transmission rate (WVTR) analyser which gives companies who were previously unable to justify the expenditure, the ability to perform in-house permeation with an affordable, robust quality control instrument. An ideal entry level WVTR analyser for food beverage, pharmaceutical, building material and electronic applications.

Conforms to ASTM E 398 and TAPPI 523 standards.

The PERMATRAN-W® Model 1/50 WVTR analyser is between 30 and 70 percent less expensive than most other units available today. The system is a single-cell, stand-alone instrument, designed to test medium-to-low barrier film within the range of 0.1-1000 gm/m2day and less the 65 mil thick. (It can also test coated paperboard.)

Another complement to the feature-rich technology is that the analyser is ‘fault tolerant’ —making it extremely easy-to-operate with minimal training. Further, its rugged construction enables it to withstand the rigorous production floor environment without being damaged.

Two critical factors—temperature and relative humidity (RH) —are what impact permeation. The PERMATRAN-W® Model 1/50 has been engineered to quickly and automatically generate relative humidity—a feature which is typically not even found on even more expensive units.

Unlike most other permeation instruments, the PERMATRAN-W Model 1/50 has a small footprint and does not require an additional computer—software is built into the unit. The operator uses a keypad to input the test parameters (which are displayed on an easy-to-read). Parameters can be saved in a Quick Start menu enabling fast startup the next time the material is tested.

  • Complies with ASTM E398. TAPPI 523. ISO 15106-1
  • Advisory screen prompts operator input
  • Safety systems prevent sensor damage
  • Set and go automatic RH controls
  • Step-by-step calibration screens
  • Achievable, downloadable data
  • Pneumatic clamp for consistent clamping force
  • Small footprint
  • Built-in software minimizes user error
  • Designed for a lifetime of daily use
  • No flow adjustment required
  • Quick Start function speeds set-up time
  • Convenient film mounting
  • WVTR Range (50 cm2, 37.8C) 0.1 – 100 g/(m2 · day)
  • WVTR Range (5 cm2, 37.8C) 1.0 – 1000 g/(m2 · day)
  • WVTR Repeatability (5 cm2) ±0.05 g/(m2 · day) absolute or ±3% relative (whichever is greater)
  • Test Method Accumulation
  • Film Area 50 cm2
  • Dry Side RH Probe Range 5 – 50% RH on Carrier
  • Test Gas RH 35 – 90% RH (G model) and 100% RH (W model)
  • Driving force gradient range 30 – 95% RH
  • Temperature Range 10 – 40C (G model) and 5 – 50C (W model)
  • Gas Requirement Dry Air or Dry Nitrogen


  • Product Memory Capacity 99 methods
  • Compliance CE/CSA/UL
  • Barometer 600 – 800 mmHg
  • Cell Clamping Pneumatic