Thoughts on B5

From:"Histomail\\" <>

Dear Colleagues,
I've always wondered why we add Conc. Formalin to our Sodium
Acetate/Mercuric Chloride solution immediately before use.?
Is it because it was necessary with Helly's, which used to oxidise and go
off rather quickly - appearing muddy brown etc.?
If we never had to bother with Formal Sublimate, why are we so concerned
with the Sodium Acetate in B5? Is there a reaction?? Or not??
Mike Rentsch. Histomail

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