Hi,
    Definately, use Eosin. It is simple and already in abundance in most labs.
We have been using it recently and what a difference. Not only are embedders
less likely to miss one of our prostate biopsies, but the cutters can see the
tissues better so they are less apt to face through the block. Putting a couple
hundred ml in the 80% (or 70%) should be sufficient and the stain in the tissue
is removed during rehydration after being cut. So it doesn't interfere with
specials or IHC.
Amos Brooks

"George, Cheryl" wrote:

> We used to use mercurachrome in our 70% ROH on the tissue processor to tint
> our small biopsies in order that the embedding techs could see them better.
> However, it is now almost impossible to find this.  Does anyone have any
> suggestions for a substitute?
>
> Thanks,
>
> Cheryl George, HT (ASCP)
> Histology/Cytology Supervisor
> NHML
> (603)663-2686
> e-mail - cgerorge@optima.org