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1.1 This test method covers the determination of gross leaks in flexible packaging containing a headspace gas. Test sensitivity is limited to 1 x 10-5 atm cm3/s (1 x 10-6 Pa m3/s) or even less sensitive as indicated in a recent interlaboratory test (reported in Section 12).
1.2 Small leaks may not be detected by this procedure. Viscoelastic effects on the products, or entrapped air, become significant and prevent passage through small openings. Positive pressure inside the pouch after the vacuum is drawn may force the product to plug small leaks. The size of the leak that can be detected is dependent upon the products contained, the nature of the packaging material, and the test parameters selected.
1.3 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
E425 Definitions of Terms Relating to Leak Testing
E515 Practice for Leaks Using Bubble Emission Techniques
F98 Recommended Practice for Determining Hermeticity of Electron Devices by aBubble Test
ICS Number Code 55.040 (Packaging materials and accessories)
UNSPSC Code 24120000(Packaging materials)