Re: [Histonet] filtering hematoxylin

From:pmarcum@vet.upenn.edu

It is dependent on the formula of the Harris Modified Hematoxylin used.  Some
commercial formulas will form less precipitate and film than others.  If it is
made in the laboratory generally I filter each day.  Commercial formulas are
checked each day for a film on the top or if I hear solid material when I shake
or stir the solution. 

Pam Marcum 

Quoting Fred Underwood :

> Weekly.  A film forms on the hematoxylin over the weekend.
> 
> Fred
> 
> >>> Diana McCaig  06/01/05 12:18PM >>>
> How often do you filter commercially prepared Harris Hematoxylin (used
> on
> autostainer)?
> 
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