In some occasions I have used hematoxylin powder Much Much older than 6 months and the solutions came perfect. Fear not to your powder!
René J.

--- On Thu, 8/28/08, Hana Peter  wrote:

From: Hana Peter 
Subject: [Histonet] Hematoxylin stability
To: histonet@lists.utsouthwestern.edu
Date: Thursday, August 28, 2008, 4:53 PM

Hi,
I recently came into possession of a small amount of hematoxylin powder
and for the first time I'm going to make my own Harris hematoxylin and 
maybe some Mayer's too.
As I have a limited amount of powder, I need to be extra careful with my
supply.
Does anyone have experience with "home" made hematoxylin and its
stability?
I found on the internet that the stability is up to 6 months. Is this
really true?
Thanks a lot!
Hana Peter


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