The Society for the study of flies (Diptera)

Hello

Any suggestions for good storage of the smallest insects in wet collection? I'm looking for small vials or similar, preferably not much bigger than a data label.
Doesn't matter if it is glass or plastic.

Usually keep my specimens in dry collection, but the wet collection do seem to grow, and I need something different than the current solution.

And suggestions or links to solutions would be much appreciated.

Thanks

Rasmus, Denmark