Gravimetric Method W302 Water Vapor Permeability Analyzer


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To test the water vapor transmission rate (WVTR) of packaging materials, such as plastic film, composite film, coextrusion film, aluminum-plated film, aluminum foil, infusion bag, sheets, paper, paper board, solar battery panel, cellophane, ceramics and porcelain, and various containers such as bag, pouch, bottle, can, bowl, and box. It is widely used in the industries of food, pharmaceuticals, personal care, household, electronics and so on and institutions of quality control, drug inspection and science research.

ASTM E96, ASTM D1653, ISO 2528, DIN 53122-1, JIS Z0208, GB/T 1038, YBB00092003

Precise & Reliable

  • High precision sensor, continuous data collecting, accurate and dependable.
  • Test accuracy reaches 0.001 g / (m2·24h), which stays in leading position of the industry.
  • Adopt the only Standard Films in the industry which are authorized by AQSIQ and developed by GBPI to verify the instrument, and the data are 100% reliable.
  • The discreteness of data for the same sample is less than 5%.

Multi-testing Chambers to test samples flexibly and Efficiently

  • Two chambers with unique sensor in every chamber. Can stop any one of the chambers to change sample, which can effectively enhance the test efficiency.
  • Two chambers can test three different samples.

Easy Operation and Realtime Curves Exhibition

  • Fully automatic operation, One-click test, automatic judgment and automatic stop.
  • Supported by professional software. Software interface is simple and easy to operate.
  • Built-in operating system, can work independently without computer.
  • Curves of temperature, humidity, weight and transmission rate, real time display and zoom in/out.
  • Professional test report, can be exported in Office or PDF formats easily.

Advanced Technology

  • Configured with a 7-inch color touch screen for setting parameters, display curves and report.
  • Temperature control adopts international advanced electromagnetic technology.  Program stepping controlling makes the temperature rises and drops automatically.
  • Carry cutting-edge ARM controlling system, running independently without computer.
  • Automatic over range protection.
  • Humidity control utilizes proportioning dry and wet gas, performing excellently.
  • Parameters are locked with password automatically.

Wide Test Range

  • Add external fittings for packaging container test, being able to test bag, pouch, bottle, can, bowl,aluminum foil, aluminum-plated film, and many other packaging containers.
  • The only tester in the industry that can test High barrier materials like aluminum foil and aluminum-plated film.

Professional Calibration

  • Adopt two calibrating methods: Weight calibration and standard film calibration. Configured with appropriative mouthpiece of temperature and humidity.
Application
To test the water vapor transmission rate (WVTR) of packaging materials, such as plastic film, composite film, coextrusion film, aluminum-plated film, aluminum foil, infusion bag, sheets, paper, paper board, solar battery panel, cellophane, ceramics and porcelain, and various containers such as bag, pouch, bottle, can, bowl, and box. It is widely used in the industries of food, pharmaceuticals, personal care, household, electronics and so on and institutions of quality control, drug inspection and science research.
Working principle
Weight reduction method (wet cup method). Fill the test dish with distilled water (according to stipulation of ASTM E 96), seal the cup with test sample, keep humidity difference between inside and outside of the cup, and water vapor will penetrate the test sample; monitor the change of cup weight to calculate transmission rate.

Mainframe, software, communication cable, sample cutter (Φ90mm), calibration weight (200g), permeation dish, desiccant, spanner, mouse

Optional:Accessories for testing packaging containers, standard film, dual gas flow humidity controlling device, computer

Test range  0.01~10000 g / (m2·24h)
Test accuracy  0.001 g / (m2·24h)
Temperature range 15~45℃
Temperature accuracy ±0.1 ℃
Humidity range Outside the cup ≤ 10 %RH, inside the cup ≥ 90 %
Humidity accuracy ±2%RH
Test area 50.24 cm2
Sample size Φ 90 mm
Sample thickness ≤ 2 mm
Sample amount 1~2 pieces
Blowing wind speed 0.5-2.5m/s (optional)
Sample amount 1~2 pieces
Instrument size 870mm×420mm×340mm
Weight 73 kg
Power AC 220 V, 50 Hz, 750W