W3/062 Water Vapor Transmission Rate Test System

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Short Description
  • W3/062 is based on cup method to measure water vapor transmission rate of plastic films, foils and finished packages. It has Six independent testing cells and can be easily connected with 9 satellite systems.

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Product Overview
  • Professional, High Efficiency and Intelligent WVTR Test 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.

    • Both water method and desiccant method can be used
    • 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 ports for temperature and humidity
    • Reference film or standard weight for fast and accurate calibration

    High Efficiency

    W3/062 system adopts the precision design of round dish rack which is equipped with 6 test dishes and supports 6 different specimens to test individually at one operation. It can be also connected with 9 satellite bases together to accomplish up to 60 tests at the same time.

    • Precision design with high test efficiency and ultra-high system accuracy
    • 6 distinct or equivalent specimens can be tested individually with independent test results at one operation
    • The system can be easily connected to a maximum of 10 instruments to accomplish up to 60 tests at the same time


    The instrument is equipped with the latest operating software, with user-friendly operating interface and intelligent data management functions. It also supports LystemTM Lab Data Sharing System, which ensures uniform management of test results and test reports.

    • Based on the user-friendly Windows operating interface for easy operation
    • Saves test data in different formats for convenient data transfer
    • Intelligent historical data searching, comparing, analyzing and printing functions
    • Supports LystemTM Lab Data Sharing System for uniform and systematic management of test results and test reports


    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 (Water Method)
    0.1~2,500 g/m2·24h (Desiccant Method)
    Number of Specimens1~6 with independent test results
    Accuracy0.01 g/m2·24h
    Resolution0.001 g (Customization Available)
    Temperature Range15°C~55°C (standard)
    Temperature Accuracy±0.1°C(standard)
    Humidity RangeWater Method: 90%RH~ 70%RH Note1
    Desiccant Method: 10%RH~98%RH Note2
    Humidity Accuracy±1%RH
    Air Velocity0.5~2.5 m/s (customization available)
    Specimen Thickness≤3 mm (customization is available for other thickness)
    Test Area33 cm2
    Specimen SizeΦ74 mm
    Test Chamber Size45 L
    Gas SupplyAir
    Gas Supply Pressure0.6 MPa
    Port SizeΦ6 mm PU tubing
    Instrument Dimension660 mm (L) x 580 mm (W) x 580 mm (H)
    Power Supply220VAC 50Hz / 120VAC 60Hz
    Net Weight80 kg

    Note1: Herein the “Humidity” means the humidity difference between the two sides of the film specimen. The humidity in the test chamber is 10%~30%RH accordingly.

    Note2: Herein the “Humidity” means the humidity difference between the two sides of the film specimen. The humidity in the test chamber is 10%RH-98%RH when the temperature is 15 to 40 °C, 10%RH-90%RH when the temperature is 45 °C, 10%RH-80%RH when the temperature is 50 °C, 10%RH-70%RH when the temperature is 55 °C.

  • ASTM D1653
  • ASTM E96
  • ISO 2528

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