Professional, High Efficiency and Intelligent WVTR System.

This instrument is based on the cup method, and is professionally applicable to the water vapor transmission rate test of film specimens.

It is equipped with high resolution sensor, whose test resolution is 0.0001g.

The sensor also provides excellent test sensitivity.


  • Wide range and high-precision of automatic temperature and humidity control to support various combinations of non-standard test conditions.
  • standard air velocity enables constant humidity difference between two sides of test dishes.
  • Automatic reset before weighing ensures accurate weighing data.
  • Gas cylinder lifting structure design and periodically weighing method to reduce system errors.
  • Convenient fast-access calibration port for temperature and humidity.
  • Reference film or standard weight for fast and accurate calibration.