[Histonet] filtering hematoxylin

[pmarcum <@t> 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 <funderwood <@t> mcohio.org>:

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