[Nhcoll-l] glass jar with ground glass stopper

[Simon Moore]

Hi Kathy 

There are at least two greases that I have used effectively 
One is paraffin soft white which is similar to Vaseline but is not affected by alcohol and the other is Alsirol from poellath labor.de
Be careful to use the right amount as too much will give you white blobs of grease below the lid level and will contaminate the preservative 

With all good wishes, Simon Moore. 
Sent from my iPhone


> On 3 May 2024, at 21:09, Kathy Omura <komura at nhm.org> wrote:
> 
> 
> I have not worked with these types of jars and was wondering what to use on the lids so they can be reopened. The jar will be holding a wet preserved (70% EtOH) specimen.
> I heard vaseline on the ground glass part of the lid and jar makes it easier to reopen.
> To make a tight seal, after the vaseline application, seal the lid with wax along the edge.
> What other options do I have? I appreciate any help you can provide.
> Kathy
> -- 
> Kathy Omura, Collection Manager
> Marine Biodiversity Center
> Natural History Museum of Los Angeles County
> (213) 763-3386
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