on 5/7/02 2:23 AM, Chris Barrett at cpbarrett@xxxxxxxxxxxxxxx wrote:
> Dan wrote:
>
> "I'd not noticed how 'slippery' developer is until now -- doing things one
> at a time, I could move all the prints around with tongs, but now I have my
> hands in it's very noticeable. I'm using stop bath to stop things, which has
> the rather pleasant side effect of making my fingers nice and squeaky again
> as it cancels out the developer on there as well as on the prints."
>
>
> Developer needs to be quite strongly alkaline for it to work. The stop bath is
> acidic to stop development.
>
> Strong alkali denatures (and hence dissolves) the surface of your skin. This
> is what causes the "soapy" feel of developing solution. When you dip your
> fingers in stop bath or fixer the acid neutralises the alkali. You are eroding
> the surface of your skin, and this is not good.
>
> I'd strongly advise you to use rubber gloves or pincers for dipping into
> developer. Also be very careful to avoid splashing (or rubbing) any developer
> into your eyes for the same reason. If you are not a spectacle wearer then get
> some safety glasses. If you do this by accident get your head under a cold tap
> and flush out with lots of clean water. Then get yourself to a hospital.
>
> Hope this helps.
>
> Chris Barrett
> Malvern
Not only that, if you are using the same fingers first in developer then
stop bath then back to developer, the developer is getting neutralized by
the stop bath being carried in with your fingers... you have to isolate the
solutions to avoid weakening the developer over time.
--
Jim Brokaw
OM-1's, -2's, -4's, (no -3's yet) and no OM-oney...
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