W3/0120 Water Vapor Transmission Rate Tester

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Short Description
  • W3/0120 is based on cup method to measure water vapor transmission rate of plastic films, foils and finished packages. It has 12 independent testing cells and conforms to ASTM, ISO international standards.

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Product Overview
  • W3/0120 Water Vapor Transmission Rate Tester is based on the cup method, and is professionally applicable to the water vapor transmission rate test of plastic films, composite films, sheets and other materials used in medical and other industry. By testing the water vapor transmission rate, the technical index of the materials could be controlled to meet the requirements for production.


    • Standard periodically weighing method and automatic reset before weighing ensures accurate weighing data
    • 12 distinct or equivalent specimens can be tested individually with independent test results at one operation
    • Standard air velocity enables constant humidity difference between two sides of test dishes
    • Wide range and high-precision of automatic temperature and humidity control to support various combinations of non-standard test conditions
    • Equipped with fast access testing ports for temperature and humidity which is convenient to the user
    • Universal RS232 communication port is convenient to the data export and transmission
    • Reference film or standard weight for fast and accurate calibration
    • Supports LystemTM Lab Data Sharing System for uniform and systematic data management


    Under a certain test temperature, a constant humidity difference is generated between two sides of the test specimen. The water vapor permeates through the specimen and into the dry side. By measuring the weight changes of the test dish in different time, water vapor transmission rate and other parameters can be obtained.

  • SpecificationsFilm Test
    Test Range0.1~10,000 g/m2·24h (standard)
    Number of Specimen1~12 (with independent test results)
    Test Accuracy0.01 g/m2·24h
    Resolution0.0001 g
    Temperature Range15°C~65°C (standard)
    Temperature Accuracy±0.1°C(standard)
    Humidity Range40%RH~95%RH (standard is 90%RH)
    Humidity Accuracy±1%RH
    Air Velocity0.5~2.5 m/s (customization is available)
    Test Area33 cm2
    Specimen Thickness≤ 3 mm (customization is available for other thickness)
    Specimen SizeΦ74 mm
    Volume of Test Chamber80 L
    Gas SupplyAir
    Gas Supply Pressure0.6 MPa
    Port SizeΦ6 mm PU Tubing
    Instrument Dimension826 mm (L) x 726 mm (W) x 702 mm (H)
    Power Supply220VAC 50Hz / 120VAC 60Hz
    Net Weight114 kg
  • ASTM D1653
  • ASTM E96
  • ISO 2528

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