[pure-silver] Chemical stability [was Re: Re: D-76 and variations]

On Tuesday 29 November 2005 14:06, Koch, Gerald wrote:
> I routinely use the contents of a plastic jar of Phenidone that is
> probably 20 years old and still as active as ever.  Phenidone solid is
> quite stabile and in the same class as hydroquinone and Metol as opposed
> to Amidol and Glycin.


        Could anybody that knows give a list of the long or short lived dry 
chemicals? In other words what can I stock up with and what should I buy a 
little at a time?

        Thanks
        Nick
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