Water Vapor Permeability Tester WVTR-W12 (Gravimetric Method – 12 Samples)

Water Vapor Permeability Tester WVTR-W12 (Gravimetric Method – 12 Samples)


  • Test range:  0.1~10,000 g/㎡·24h (Water method)
  • Number of test samples: 1 ~ 12 (independent testing results)
  • Test precision: 0.01 g/m2·24h
  • Resolution: 0.0001g (Customization)
  • Temperature range: 5 ℃ ~ 95 ℃ (standard)
  • Temperature accuracy: ±0.1℃ (standard)
  • Humidity range: 10%RH~98%RH (standard is 90%RH)
  • Humidity accuracy: ±1%RH
  • Air speed: 0.5~2.5 m/s (customization)
  • Sample thickness: ≤3mm (Customization)
  • Test area: 33 cm2
  • Sample size: Φ74mm
  • Gas supply: air
  • Gas supply pressure: 0.6 MPa
  • Port size: Φ6mm PU tube
  • Power Supply: 220 VAC 50 Hz / 120 VAC 60 Hz
  • Instrument dimensions: 560mm (width) × 650mm (depth) × 420mm (height)
  • Net Weight: 90Kg


  • Films:
    Plastic films, plastic composite films, paper-plastic composites. films, coextruded films, aluminum coated films, aluminum foil composite films, fiberglass aluminum foil composite films and many other film materials Sheets PP, PVC and PVDC sheets, metal sheets, rubber pads and other film materials sheets
  • Textiles and Nonwovens:
  • Textiles and non-woven fabrics such as diapers, sanitation. products, etc.
  • Paper and paperboard
  • Aluminum coated cigarette paper, plastic aluminum foil. composite films and other papers and cartons


  • Inverted cup method:
    Mount the film or sheet on the test plate, cover the top surface of the sample with distilled water and make the bottom in certain humidity. Generate a constant humidity difference. between two sides; Water vapor penetrates through the sample and measure the weight changes at different times to obtain the water vapor transmission rate.
    NOTE: Inverted cups required
  • Artificial Skin:
    Artificial skin has to meet standard requirements for water Vapor transmission rate to ensure better respiratory performance. This instrument can be used to test water vapor permeability.
    artificial skin
  • Cosmetics:
    Water vapor permeability of cosmetics.
  • Aseptic films:
    Aseptic wound protective films, medical dressings and protective clothing materials
  • LCD screen:
    LCD water vapor transmission rate and corresponding sheet
  • SolarBack-sheets:
    Water vapor transmission rate of the rear solar sheets and their corresponding sheet.
  • Paint film:
    All kinds of paint films.
  • Biodegradable films:
    Test the water vapor permeability of various types of biodegradable films, e.g. starch-based packaging films

ASTM E96, ASTM D1653, TAPPI T464, ISO 2528, DIN 53122-1