Archived posting to the Leica Users Group, 1999/02/18

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Subject: [Leica] Re: Re: Drying marks
From: Ken Wilcox <wilcox@tir.com>
Date: Thu, 18 Feb 1999 17:33:56 -0500

The process of osmosis. Since the distilled water is nearly 100% water and
the get emulsion is a much lower % of water, water will naturally flow into
the gel. It does this with tap water as well but not as much as the tap
water is less than 100% water.

Ken Wilcox

>Ken Wilcox wrote:
>>
>> Be careful with distilled water for the final rinse. It will cause the
>> emulsion to swell and become VERY soft!
>>
>
>Ken, can you explain the reasons for this?  How would uncontaminated,
>pure water cause more swelling of the emulsion than other water?  I
>don't understand.
>
>M.
>
>--
>Martin Howard, Grad. Schl. for Human-Machine Interaction,  |
>HMI/IKP, Linkoping University, SE-581 83 Linkoping, Sweden.|    Just
>Tel: +46 13 28 5741; Fax: +46 28 2579; ICQ: 354739         | say "DOOH"
>E-mail: marho@ikp.liu.se; www.iav.ikp.liu.se/staff/marho/  +------------


- ----
Ken Wilcox                             Carolyn's Personal Touch Portraits
LHSA, MEA, LAW                      preferred---> <wilcox@mail.tir.com>
                                                     <kwilcox@gfn.org>