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Method for measuring pinhole size in food packaging


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GPER

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Posted 22 April 2021 - 04:38 PM

Hello all, I am in the food packaging business and would like to know Best Known Method for measuring pin hole sizes.  Does anyone have a test method or suggestions to share?



beautiophile

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Posted 23 April 2021 - 01:09 AM

Scale loupe or microscope? Maybe with a help of a dyed low-surface-tension liquid.



Slab

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Posted 23 April 2021 - 11:20 AM

Aside from the mentioned optical comparator and dye penetration, there is gas flow/detection. Depends on the packaging application for regulation. There is a 3rd party standard from British and International Standards BS EN 868-1


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