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Significance and Use
4.1 This test method is intended for use for evaluating the performance of thermal insulated packaging used for high-value, high-risk materials. This test method may also be used for any product that requires accurate internal package temperature readings while being exposed to a range of external air temperatures.
4.2 Certain items, such as biological materials, pharmaceuticals, diagnostics, and blood products, must be shipped inside temperature-controlled packages. Factors affecting the rate of heat transfer of the package include the insulation of the exterior package, the energy source, and the product payload.
4.3 Because of the variety of factors affecting the performance of a thermally insulated package, testing should be conducted with the actual package whenever possible. When simulated packages are used, special care must be exercised so that the simulated payload and coolant will be as close as possible to the actual packages in temperature and other relevant physical properties.
1.1 This test method covers the determination of the thermal insulation quality of a package and the thermal stability of its contents when exposed to variable ambient temperature conditions. It is suitable for testing packages with various internal energy sources with or without product payloads.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. 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. Specific precautionary statements are given in .
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D996 Terminology of Packaging and Distribution Environments
D4332 Practice for Conditioning Containers, Packages, or Packaging Components for Testing
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
Other StandardsISTA 5B Focused Simulation Guide for Thermal Performance Testing of Temperature Controlled Transport Packaging Available from International Safe Transit Association (ISTA), 1400 Abbott Rd., Suite 160, East Lansing, MI 48823-1900, http://www.ista.org.
ICS Number Code 55.040 (Packaging materials and accessories)
ASTM D3103-14, Standard Test Method for Thermal Insulation Performance of Distribution Packages, ASTM International, West Conshohocken, PA, 2014, www.astm.orgBack to Top