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tgtaylor
9-Oct-2016, 11:13
I'm still working from a stock solution that I mixed from scratch 19 month ago (March, 2015). I wonder how long it lasts?

Thomas

Ironage
9-Oct-2016, 12:10
When I use distilled water and amber glass bottles the solution has always remained good until it is used up. Even when it has been years.

stawastawa
9-Oct-2016, 13:07
I assume you both are referring to parts A and B? or to mixed a and b together?

My understanding is seperate and protected from light they will last a looong time.

Vaughn
9-Oct-2016, 14:12
The Ferric ammonium citrate can get moldy after awhile. I have just filtered it.