Cyanotype

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From: Monnoyer Philippe (monnoyer@imec.be)
Date: 06/16/03-07:20:05 AM Z


Small question:

When I mix my two solutions (classical cyano), namely 25%AFC (Fresh made solution) and 10%Ferricyanide, I have a greenish-white precipitate in a few seconds.
Is it normal ? I didn't notice it in the past ... Does it affect the results ?
Note that if I dilute the AFC solution to 10%, I still have that precipitate.
Note also that the ferri solution doesnt precipitate with AFO instead of (AFC).
Could this be that the AFC under its solid form turns bad after 1 year storage ?

Thanks,

Philippe


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