Re: cleaning fiberglass print drying screens

Thanks Ryuji,

Now that you mention it, my old brain remembers the bleach suggestion. But,
the volatile HE-1 is a logical solution - unless the Oxyclean works - let us
know if/when you try it.

Steve Tucker

>From: Ryuji Suzuki <rs@silvergrain.org>
>Reply-To: alt-photo-process-l@sask.usask.ca
>To: alt-photo-process-l@sask.usask.ca
>Subject: Re: cleaning fiberglass print drying screens
>Date: Tue, 25 Nov 2003 10:15:08 -0500 (EST)
>
>From: Stephen Tucker <digitalneg@hotmail.com>
>Subject: cleaning fiberglass print drying screens
>Date: Tue, 25 Nov 2003 10:05:07 -0500
>
> > I would like to use my fiberglass print drying screens that have been
> > sitting around un-used for some years. Even though I always washed my
> > prints thoroughly in the past, how can I clean/wash the screens to be
>sure
> > that no chemical contamination exists?
>
>Use HE-1 type "hypo eliminator" that chemically oxidizes thiosulfate
>to sulfate state, which is relatively harmless. One nice thing about
>this option is that all the oxidizing agent is volatile, so there is
>no worry for harmful solid residue. Some people use household bleach,
>but this must be thoroughly washed out, though it's always a good idea
>no matter which agent is used. I'm more curious how sodium
>percarbonate products (like Oxyclean) can be used to destroy
>thiosulfate in darkroom cleaning... I have a big pail of it but I
>haven't tested it yet.
>--
>Ryuji Suzuki
>"Reality has always had too many heads." (Bob Dylan, Cold Irons Bound,
>1997)

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Received on Tue Nov 25 17:39:03 2003