[Histonet] Expiry date of NBF

[Joseph Saby]

We use the expiration date on the formalin as the use by date.  By the time the 
solution would be out of date, the tissues should be very well fixed, so the 
formalin becomes just a holding solution.

Joe Saby
NAMSA




________________________________
From: "amitapandey <@t> torrentpharma.com" <amitapandey <@t> torrentpharma.com>
To: histonet <@t> lists.utsouthwestern.edu
Sent: Wed, May 18, 2011 12:29:58 AM
Subject: [Histonet] Expiry date of NBF

Dear Histonetters,

I require one clarification on declaration of  expiry date of 4% nutral 
buffer formalin (NBF) prepared in our lab ( from 40% solution) ? 

Do you declare the expiry date of this prepared solution ? If so what 
criteria do you follow for this?

Important to mention that  we have to archive these tissue in NBF for 5 
years as part of GLP toxicology. 

Your experience or view on these points are welcomed.

Amita
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