Water Vapor Transmission Rate (WVTR) ASTM F Permeation of Flexible Barrier Materials Using a Modulated Infrared Sensor. Water Vapor Transmission . Designation: F – 05 Standard Test Method for Water Vapor Transmission Rate Through Plastic Film and Sheeting Using a Modulated. ASTM F outlines an instrumented procedure for determining the rate of water ASTM F is a standard test method for measuring the water vapor.

Author: Grohn Kataxe
Country: Guinea-Bissau
Language: English (Spanish)
Genre: Politics
Published (Last): 9 October 2004
Pages: 465
PDF File Size: 10.7 Mb
ePub File Size: 16.65 Mb
ISBN: 902-8-18557-132-4
Downloads: 68873
Price: Free* [*Free Regsitration Required]
Uploader: Zugul

ASTM F1249

F can accurately differentiate barrier attributes of materials and packaging below the sensitivity limits of E Send us a request Need help or have a question? For moisture sensitive products, such as crackers, dry milk powers, prescription medicines, etc. These shall incorporate O—rings suitable for sealing the diffusion cell to the test chamber pneumatic? F allows companies of all sizes to accomplish more with fewer labor resources and provides better, more precise results.

Due to the limitation of the sensitivity. Referenced Documents satm separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Astn thermistor sensor and an appropriate control circuit will serve to regulate the temperature unless measurements are being made close to ambient temperature.

Report the average temperature and the range of temperatures observed during the test. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.


ASTM D water c Link to Active This link will always route to the current Active version of the standard. The method is applicable to sheets and films up to 3 mm 0. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.

A number in parentheses indicates the year of last reapproval. Again, this is necessary only in the earlier model WVTR instruments that have a separate conditioning rack and testing chamber. The inverse relationship of WVTR to thickness c1249 the direct relationship of WVTR to the partial pressure differential of water vapor may not always apply.

Originally approved in It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Water Vapor Transmission Rate (WVTR) ASTM F

Formally confirming that your products and services meet all trusted external and internal standards. For modern high barrier materials, this method is not sensitive enough to measure the results, or efficiently obtain results in a reasonable time period.

Summary of Test Method 4. Through our network of over 43, people in 1, laboratories and offices in countries, Intertek provides quality and safety solutions to a wide range of industries around the world.

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. It is essential to accurately test the barrier property, also called as water vapor transmission rate WVTR.


Product packaging f249 an important role in protecting product quality for the duration of its desired shelf life and providing packaged product stability. Inspection Validating the specifications, value and safety of your raw materials, products and assets. If unfamiliar with the material being tested, the operator should investigate the effect of conditioning time to be certain that sufficient time has been allowed for the material to equilibrate under the test conditions asrm Note 3.

ASTM F — This is necessary only in the earlier model WVTR instruments that have a separate conditioning rack and testing chamber.

This method is suitable to test modern flexible barrier films and sheets consisting of single and multilayer natural or synthetic polymers and foils. The permeability is meaningful only for homogeneous materials, in which case it is a property characteristic of bulk material.

Water Vapor Transmission Rate (WVTR) ASTM F1249

It provides for the determination of 1 water vapor transmission rate WVTR2 the permeance of the? Greater sensitivity provided by F methodology ensures lab and business managers have the information they need to make packaging decisions that meet requirements in challenging environmental conditions globally. NOTE 1—Values for water vapor permeance and water vapor permeability must be used with caution.