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Comparing ASTM E96 and D6701 Test Methods

Comparing ASTM E96 and D6701 Test Methods
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Comparing ASTM E96 and D6701 Test Methods - 1

WHITE PAPER A COMPARISON OF THE ASTM E96 AND D6701 TEST METHODS AMETEK MOCON® April 2024 Content: Introduction of ASTM E96. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 New Method with ASTM D6701 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Summary of Method Comparison. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

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Comparing ASTM E96 and D6701 Test Methods - 2

WHITE PAPER ASTM E96 ASTM E96, also called the gravimetric or cup method, is a common method used to determine the water vapor transmission rate (WVTR) of high transmitting plastic barrier or non-woven materials. The cup method (Fig 1.) involves placing a test material on top of a dish filled either with water (to test the WVTR going out of the dish) or a desiccant (to test the WVTR going into the dish). The test dish is weighed before being placed in an environmental chamber, and then weighed periodically until it reaches equilibrium. The D6701 method allows for precise control of...

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Comparing ASTM E96 and D6701 Test Methods - 3

SOLUTION WITH ASTM D6701 METHOD WHITE PAPER Fig 3. ASTM D6701 Inverted Cup with Guard Film Concept A more effective and user-friendly method of measuring WVTR in high transmitting materials is ASTM D6701 (Fig 3.) with RH sensor. It is an instrumental method with the modified inverted cup and guard film concept, so that it eliminates the air gap issue completely. The unique design allows measurement of True Permeation through the samples that reflect real-life situations for high transmitter moisture barriers. The only instrument complying to ASTM D6701 is the MOCON PERMATRAN-W 101K (Fig....

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Comparing ASTM E96 and D6701 Test Methods - 4

ASTM D6701 IS THE BEST METHOD TO TEST HIGH PERMEABLE AND NON-WOVENS WHITE PAPER When using MOCON PERMATRAN-W 101K, the entire testing process is automated, eliminating the need for manual measurements and WVTR calculation, allowing for less user error and greater lab to lab reproducibility. Measuring WVTR of high permeable polymer membranes and non-wovens, the D6701 method is more accurate and reliable, making it a more effective test method for this type of applications. The D6701 method also allows for precise control of temperature and RH, eliminating the variations that are present with...

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