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    AI Overview
    A Water Vapor Transmission Rate (WVTR) machine measures the amount of water vapor passing through barrier materials (films, packaging,, plastics) over time to test moisture resistance. Common methods include infrared sensors (ASTM F1249) or gravimetric cup methods (ASTM E96). These machines are crucial for quality control in food, pharmaceutical, and electronic packaging industries. 
    Key Types of WVTR Machines 
    • Infrared Sensor Method (e.g., Labthink C301H, MOCON AQUATRAN 3/34): These offer high sensitivity and fast results by measuring moisture concentration via infrared sensors, often used for high-barrier films.
    • Gravimetric/Cup Method (e.g., Thwing-Albert EZ-cup, Labthink W3/062): These weigh a cup containing a desiccant and the sample over time to determine moisture gain, adhering to ASTM E96 standards.
    • Electrolytic Sensor Method: Suitable for extremely low permeability tests, often used to determine the exact barrier performance of specialized materials. 
    Key Features and Capabilities 
    • Testing Flexibility: Capable of testing flexible films, sheets, plastics, and finished containers (bottles, bags).
    • Environmental Control:
    • Water Vapor Transmission Rate WVTR Tester - Labthink Testing Equipment
      WVTR stands for Water Vapor Transmission Rate and measures how much water vapor passes through a material over time. It's a critic...
      Labthink
    • Water Vapor Transmission Testing Equipment | Thwing-Albert
      Water vapor transmission rate (WVTR) is a critical characteristic of materials used in refrigerated and potentially wet environmen...
      Thwing-Albert
    • High Quality WVTR Tester,Low Price ... - GBPI
      One test chamber water vapor permeability analyzer using weight reduction method is to test the water vapor transmission rate (WVT...
      GBPI
    Show all
    Show more
    Images
    Water Vapor Permeation Analyzers - WVTR Testing | AMETEK MOCON
    Water Vapor Permeation Analyzers - WVTR Testing | AMETEK MOCON
    AMETEK MOCON
    Water Vapor Transmission Rate WVTR Tester - Labthink Testing ...
    Water Vapor Transmission Rate WVTR Tester - Labthink Testing ...
    Labthink
    OTR, CO2TR & WVTR Permeability Testers for Barriers, Films ...
    OTR, CO2TR & WVTR Permeability Testers for Barriers, Films ...
    AMETEK MOCON
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    Web results

    Water Vapor Permeation Analyzers - WVTR Testing


    AMETEK MOCON
    https://www.ametekmocon.com › products › wvtr-perme...
    AMETEK MOCON
    https://www.ametekmocon.com › products › wvtr-perme...
    AMETEK MOCON provides water vapor permeation and permeability analyzers to test water vapor and moisture transmission rates. Learn more about our WVTR ...

    Water Vapor Transmission Testing Equipment


    Thwing-Albert
    https://www.thwingalbert.com › product-category › mo...
    Thwing-Albert
    https://www.thwingalbert.com › product-category › mo...
    We carry testing equipment such as our EZ-Cup for measuring moisture vapor transmission rate (WVTR) using the cup method. Contact us for a quote today.

    Water Vapor Permeability Tester


    en.labthink.com
    https://en.labthink.com › en-us › products › test-property
    en.labthink.com
    https://en.labthink.com › en-us › products › test-property
    Labthink provides the most comprehensive water vapor permeation analyzers. Our WVTR testers support multiple ASTM/ISO methods for precise moisture ...

    Water Vapor Transmission Rate WVTR Tester


    Labthink
    https://www.labthinkinternational.com › test-property
    Labthink
    https://www.labthinkinternational.com › test-property
    WVTR (Water Vapor Transmission Rate) measures how much water vapor passes through a material over time. It's a critical parameter for evaluating the moisture ...Read more
    5.0(84)
    People also ask
    What is the purpose of WVTR?
    Water vapor transmission rate (WVTR) is the measure of how much water vapor passes through a material over a given time, used to evaluate moisture barrier properties.

    What is Water Vapor Transmission Rate? | Kuraray America, Inc.


    Kuraray
    https://www.kuraray.com › us-en › about › glossary › w...
    Kuraray
    https://www.kuraray.com › us-en › about › glossary › w...
    What is a good MVTR value?
    MVTR in Practice: What the Numbers Mean

    Low Breathability: < 5,000 g/m²/24h: Suitable for casual use or light rainwear where high exertion isn't expected. Moderate Breathability: 5,000–10,000 g/m²/24h: Good for general outdoor use with moderate activity.    Jul 23, 2025

    MVTR Explained: Importance in Outdoor Clothing - SectionHiker.com


    Section Hiker
    https://sectionhiker.com › what-is-mvtr-moisture-vapor-t...
    Section Hiker
    https://sectionhiker.com › what-is-mvtr-moisture-vapor-t...
    What is the standard for WVTR test?
    Commonly recognized standards for WVTR measurement include: ASTM E96: Gravimetric method using weight change in a controlled cup setup. ASTM F1249: Instrumental method with infrared sensors for detecting water vapor. ASTM F3299: Ultra-sensitive electrolytic method using phosphorus pentoxide sensors.

    Water Vapor Transmission Rate (WVTR) Testing for Plastic Films


    Polymerupdate Academy
    https://www.polymerupdateacademy.com › Details
    Polymerupdate Academy
    https://www.polymerupdateacademy.com › Details
    What are the units for WVTR?
    An error has occurred. Please try again later.

    Understanding WVTR Water Vapor Transmission Rate Testing ...


    YouTube · AMETEK MOCON
    62.8K+ views · 10 years ago
    YouTube · AMETEK MOCON
    62.8K+ views · 10 years ago
    2:56
    The WVTR is automatically calculated using the amount of moisture in the stream, the carrier gas flow rate and the area of the film sample being tested.
    5 key moments5 key moments in this video
    From 00:00
    Introduction
    From 00:33
    Basics of Permeation
    From 01:32
    WVTR Testing With OX-TRAN 2/22
    From 01:52
    Side View Diagram of Test Cell
    From 02:50
    Closing
    AMETEK MOCON
    YouTube·
    Jun 17, 2015

    Understanding WVTR Water Vapor Transmission Rate Testing ...

    YouTube·AMETEK MOCON·Jun 17, 2015
    YouTube
    In this video
    • 00:00
      Introduction
    • 00:33
      Basics of Permeation
    • 01:32
      WVTR Testing With OX-TRAN 2/22
    • 01:52
      Side View Diagram of Test Cell
    • 02:50
      Closing

    Permeability & WVTR Testing Equipment | Oxygen, Water ...


    AMETEK MOCON
    https://www.ametekmocon.com › searchbybrand › mocon
    AMETEK MOCON
    https://www.ametekmocon.com › searchbybrand › mocon
    MOCON Permeation Testing Analyzers are recognized as the industry-leading solution for over 50 years and are the basis for many global permeability testing ...Read more
    Videos
    WVTR Transmission Rate Analyzer - Water Vapour ...
    YouTube · QUALITEST USA
    Feb 11, 2025
    YouTube · QUALITEST USA
    1:32
    WVTR Transmission Rate Analyzer uses infrared method moisture analysis with 0.002 g/m²/24h resolution & tests 3 samples simultaneously.
    QUALITEST USA
    YouTube·
    Feb 12, 2025

    WVTR Transmission Rate Analyzer - Water Vapour ...

    YouTube·QUALITEST USA·Feb 12, 2025
    YouTube
    How To test the WVTR of materials using Labthink C301 ...
    YouTube · Labthink Instruments Co., Ltd
    Mar 29, 2024
    YouTube · Labthink Instruments Co., Ltd
    7:07
    Test WVTR of materials with Labthink C301B using 4 steps: set humidity, mount specimen, preset temp, and start test.
    Labthink Instruments Co., Ltd
    YouTube·
    Mar 29, 2024

    How To test the WVTR of materials using Labthink C301 ...

    YouTube·Labthink Instruments Co., Ltd·Mar 29, 2024
    YouTube
    In this video
    • 01:47
      Tc03 Temperature Control Device
    • 03:10
      Step 2 Mod and Clamp the Specimen
    • 04:05
      Step 4 Start the Test
    • 04:12
      Start the Test
    New One-Cell OTR/WVTR Models | AMETEK MOCON
    YouTube · AMETEK MOCON
    Nov 8, 2024
    YouTube · AMETEK MOCON
    1:12
    New budget-friendly one-cell models of Oxran 222 and Permitran 334 offer the same testing capabilities as two-cell counterparts.
    AMETEK MOCON
    YouTube·
    Nov 8, 2024

    New One-Cell OTR/WVTR Models | AMETEK MOCON

    YouTube·AMETEK MOCON·Nov 8, 2024
    YouTube
    In this video
    • 00:00
      Intro
    • 00:20
      Applications and Info
    • 01:06
      Closing
    View all

    Web results

    Moisture vapor transmission rate


    Wikipedia
    https://en.wikipedia.org › wiki › Moisture_vapor_trans...
    Wikipedia
    https://en.wikipedia.org › wiki › Moisture_vapor_trans...
    Moisture vapor transmission rate (MVTR), also water vapor transmission rate (WVTR), is a measure of the passage of water vapor through a substance.Read more

    Water Vapor Permeability Analyzer,WVTR ...


    GBPI
    https://www.gbpitester.com › water-vapor-permeability-...
    GBPI
    https://www.gbpitester.com › water-vapor-permeability-...
    It measures water vapor transmission rate of samples under controlled temperature and humidity, widely used for films, sheets, paper, packages and materials in ...Read more

    Systech AquaSense 7101 Water Vapor Permeation


    Industrial Physics
    https://industrialphysics.com › product › aquasense-710...
    Industrial Physics
    https://industrialphysics.com › product › aquasense-710...
    The Lyssy L80-6001 Water Vapor Permeation Analyzer is a highly automated WVTR tester featuring the latest in advanced humidity sensor technology. Ideal for ...Read more
    People also search for
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