storage of tissues

From:Rita Angel

Hi all,

I have a question about storage of tissue that I hope someone can help me 
with. Does anyone know how long animal tissues can be stored in 70% ethanol 
without any damaging effects or hardening of tissues (after they've been 

We normally don't keep our tissues in 70% ethanol any longer than a few 
weeks, but we've been told we need to keep all of our formalin under a fume 
hood, (even if they're in closed containers) which we have very limited 
space for.  These are tissues that we want to keep long term; we dispose of 
unwanted tissue 30 days after we receive them. If we could store them in 
ethanol, this would solve our problem.

Thanks for all of your help in advance.
Please respond to my email address, since I just subscribed to the histonet 

Rita Angel

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