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wildbillbugman
05-30-2010, 04:08 PM
P.E.,

Apologies if this is somewhere in the "archives". How long can I keep a 1% aqueous solution of erythrosine a 4C?
Bill

Photo Engineer
05-30-2010, 05:28 PM
Just about forever Bill. It is a very stable dye stored in the dark.

PE