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<p>[QUOTE=&quot;desertgem, post: 1045889, member: 15199&quot;]Now I have a better understanding of the bag. I tested similar bags from Walmart ( 2x3 size) , Chinese 99 cent store ( 2x2), and an unknown source 2x2, and all tested no chlorine by the flame test. They are very flexible and appear to be polyethylene, which are quite safe, but can&#039;t be sure about yours. I use them for mineral samples before anyone asks for a toke.</p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>

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