>     ... have requested that I post this information here on the
> HistoNet, (so please do not kill the messenger).  We (BBC Biochemical)
> manufacture B*Plus Fix(tm).  It is a B5 substitute/replacement, which
> does not contain any mercuric chloride (or any other heavy metals). 

Telling us that it does not contain mercury isn't very
informative!
It would be useful if you could say what substances it _does_
contain, 
and in what concentrations. Armed with this information a user
can
decide whether it may be worthwhile to try "B*plus fix (tm)" for
a
particular purpose. Without knowledge of the composition it would
be
irresponsible to use it, especially in connection with an
important 
application such as research or clinical diagnosis. 

So, how about spilling the beans? You'll sell more of the stuff
if
the customers know exactly what it is!
-- 
-------------------------
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/