Hi Cheryl:
Yes there is:
1% Hydroquinone
5% Sodium Sulfite
in Distilled water
This differentiator, which I use in my lab, acts very quickly.
For a 5 micron paraffin section, I dip it only twice, quickly, into the
differentiator, and then immediately, into 4 changes of tap water, then
a staining dish with tap water.
Hope this helps,
Tim
Tim Wheelock
Harvard Brain Bank
McLean Hospital
Belmont, MA
617-855-3592
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