I need some advice regarding the effectiveness of expired formalin.
Someone donated to us a 20L carboy of 10% Neutral Buffered Formalin with
expiry date Jan. 2002. Is this solution usable?
I also have some old 2.5L bottles of Formaldehyde which have chunks of
solute in it.
I remember reading about formaldehyde turning into formic acid after
some time so I'm wondering whether these old bottles (no expiry date on
them) can still be used or more fit for disposal.
Experimental Surgery Laboratory
National University of Singapore
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