Nick_Madary@hgsi.com wrote:
> 
> Any quick answers on removal of DAB?  We are using bleach to
> "neutralize" I know that is not the correct phrase, and then we
> place in a container to have it removed.  Is there a problem
> with pouring it down the sink? Is there another accepted method
> of removal?

There was much Histonet discussion of this a few years ago. 
It seems that acidified permanganate is preferable to bleach, 
and you need to find out if it's OK to put permanganate down 
the drain in your region.  
Have a look at http://www.histology.to/DABfaq.html
for a full discussion of the subject by Dr R. Dapson.
-- 
-------------------------
John A. Kiernan
Department of Anatomy and Cell Biology
The University of Western Ontario
London,   Canada   N6A 5C1
   kiernan@uwo.ca
   http://publish.uwo.ca/~jkiernan/