Quote Originally Posted by Marco Buonocore View Post
Will Potassium Ferricyanide keep as a stock solution, in a brown glass bottle?

I make a 10% Potassium Bromide solution. Could I do the same with the ferri?

From what I can tell, it lasts for a long time (years). I usually make a 1% solution with distilled water, but anyway, dry potassium ferricyanide keeps for decades.