[NHCOLL-L:3056] clarification: vial stoppers

[colin favret]

Hi all, I just talked to a representative from West Pharma, and (lo and 
behold), the stoppers they used to make were not a silicone blend, but 
EPDM (ethylene propylene diene monomer). These were expensive, but they 
lasted "forever." Anyway, what kinds of stoppers for ethanol vials is 
everyone using these days? Has anyone else used EPDM and are there any 
other suppliers? Thanks so much for your input. Cheerio, colin

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Colin Favret, Insect Collection Manager
Illinois Natural History Survey
1816 S Oak Street
Champaign IL 61820, U.S.A.
https://netfiles.uiuc.edu/crf/www/
+1-217-244-2149
crf at uiuc.edu