Re: Rollo-Pyro dilution matters and others

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From: Nick Makris (nick@mcn.org)
Date: 05/04/01-03:27:20 PM Z

Manual, For the benefit of us non math types, would you elaborate just a
little on the meanings of these mathematical references. For some reason, I
don't have a clue.

Many thanks,

Nick

----- Original Message -----
From: "Manuel" <punctumgt@netc.pt>
To: <alt-photo-process-l@skyway.usask.ca>
Sent: Friday, May 04, 2001 12:52 PM
Subject: Re: Rollo-Pyro dilution matters and others

> Carl,
>
> First of all thank you very much for your reply.
>
> Concerning the dilution matter , perhaps I'm missing something , but I
> can't understand how 1:2:75 and 1.5:3:100 can express the same dilution.
> 15ml + 30ml in 1000 is expressed by 1.5:3:100.
> If we used the dilution expressed by 1:2:75 it should be 13.3ml+22.6ml in
> 1000ml, which is considerably different.
>
> Please correct me if I'm wrong. :-)
>
> Regards
>
>
> Manuel
>
> Punctum Studios Ltd
> Portugal EU
>
>
>
>
>
>
>
> > From: Carl Weese <cweese@earthlink.net>
> > Reply-To: alt-photo-process-l@sask.usask.ca
> > Date: Wed, 02 May 2001 06:18:36 -0400
> > To: alt-photo-process-l@sask.usask.ca
> > Subject: Re: Rollo-Pyro dilution matters and others
> >
> > Manuel,
> >
> > The normal dilution of PMK is 10ml A plus 20ml B in 1000 ml of water
> > (1:2:100). The standard dilution of ABC+ is 15ml + 30ml in 1000. This
can be
> > expressed as 1:2:75 or 1.5:3:100. However since it's a much more active
> > developer, with relatively high contrast films like FP4 and sheet TXT,
it
> > can be more convenient to use it at the weaker 1:2:100 dilution.---Carl
>
>
>

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