The #5 cork stopper has an average diameter of 15.5mm or roughly 5/8" & fits our 18x150mm standard chemistry lab tubes; only $0.12 each, save on quantity. It also comes bundled as 18x150mm glass test tubes with corks, 100 each.
|There are: ~25mm/inch|
|Size||Height (mm)||Diameter Top (mm)||Diameter Bottom (mm)||Average Diameter (inch)|
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