Steven,

If the block doesn't have to be processed and sectioned, the paraffin could
easily be colored by stirring in powdered carbon, which is essentially the
same colorant found in black drawing ink. And the cassettes could be colored
with one of the new spray paints designed specifically for painting
plastics.

Paul M.

> ----------
> From: 	histonet-bounces@lists.utsouthwestern.edu on behalf of
> Steven P Postl
> Sent: 	Friday, July 22, 2005 7:31 AM
> To: 	histonet@lists.utsouthwestern.edu
> Subject: 	[Histonet] Black paraffin and cassettes
> 
> Let me add a few points after touching base with the researcher.  There 
> will be no tissue processed, nor labeling needed.  Just a plain paraffin 
> block made.  This block will be used like a "cork board" but with paraffin
> 
> instead to pin a tissue flat to the surface.  Odd request, but I have to 
> ask. Thanks again for those who have answered, and thanks to all of you 
> who are scratching your head, drinking your coffee and thinking about 
> this.  TGIF
> 
> 
> ----- Forwarded by Steven P Postl/LAKE/PPRD/ABBOTT on 07/22/2005 09:24 AM 
> -----
> 
> 
> Steven P Postl
> 07/21/2005 07:40 PM
> 
>  
>         To:     histonet@lists.utsouthwestern.edu
>         cc: 
>         Subject:        Black paraffin and cassettes
> 
> A researcher is wondering (now so am I [I never heard this request 
> before]) if any company sells black paraffin and black embedding 
> cassettes?  No, this isn't a Gothic thing, a legitimate request.  Would it
> 
> be possible to add something to paraffin to make it stay a black color and
> 
> remain strong as our commercial paraffin products?  Thanks. 
> 
> 
> 
> 
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> 

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