Higher grade ethanol's ( >70% ) after NBF ( phosphate buffered ) lead to
precipitated phosphate salts in processing tissue .  Is this an advantage of
acetate buffered formalin ? Anyone know the amounts or recipe for the
acetate buffer ?

John Smallwood M.L.T.
50 Barrydale Cres.,
London, Ont.
Canada
N6G 2X4
jrsmallwood@home.com