[alt-photo] Re: Fluka / Sigma-Adrich Ammonium Iron(III) Citrate-contains Fe(II)!!!

[Loris Medici]

Yes, I agree... I'll test / use that way.

OTOH, as a note: I use 3% peroxide stored in a closet (away from light), at
room temperature. I don't think it may weaken too much and too quickly at
that concentration and storage contitions... (Something like 2-3% per year,
at max. maybe?)

Regards,
Loris.


-----Original Message-----
From: alt-photo-process-list-bounces at lists.altphotolist.org On Behalf Of
C.Breukel at lumc.nl
Sent: Monday, June 28, 2010 11:40 AM
To: alt-photo-process-list at lists.altphotolist.org
Subject: [alt-photo] Re: Fluka / Sigma-Adrich Ammonium Iron(III)
Citrate-contains Fe(II)!!!

Loris,

I am sure you know that a peroxide stock isn't stable anyway; it gradually
looses strength, so your empirical method is the best in this case