Re: [Leica] Jobo and wash aids

["Dan Post" <dwpost@email.msn.com>]

Nathan-
The washing aid is actually a misnomer- It's used AFTER washing, and in a
sense is more a drying aid! I used to mix Photo-Flo at half the recommended
rate, and as I stripped the film from the reels, after washing, simply
dipped one end of the film in the open tank of Photo-Flo solution, pulled
the film through and out of the solution in one sweep- the film staying
under just long enough to 'wet' it and then hang it to dry... You just need
to 'wet' the surface so the water doesn't bead and cause marks where the
beads evaporate. If you do feel you have to wipe the film, use a damp
cellulose sponge that is used for no other purpose, and wipe only the base
side tof the film!
In our lab, the rollers that guide the film out of the drier have to be
washed nearly every night as even after the film dries, it leaves a quantity
of our final stabilizer, which is a preservative with a wetting agent on the
rollers, and these can leave smudges on the film! The build up is very real
( though I think a good wash in a soapy ammonia solution will remove any
trace)
Dan
- -----Original Message-----
From: Nathan Wajsman <nathan.wajsman@euronet.be>
To: leica-users@mejac.palo-alto.ca.us <leica-users@mejac.palo-alto.ca.us>
Date: Thursday, May 20, 1999 2:02 PM
Subject: Re: [Leica] Jobo and wash aids


>Hi Robert,
>
>Thanks. Your advice is consistent with Tina's so I guess I will bite the
bullet
>and do the same.
>
>Nathan
>
>Robert G. Stevens wrote:
>
>> Nathan:
>>
>> I do E6 and B&W and at times do a dozen or so rolls a week.  I would
follow
>> Jobo's recommendations, as I think they are saying the build up of the
>> wetting agent will allow the chemicals to build up and cause process
>> contamination, particularily if you have a Jobo Lift.  As for wetting
>> agents, I have a 500ml (2 cup) measuring cup I put the wetting agent in
and
>> then split the two halves of the reel and drop the film into the
solution.
>>
>> I have noticed that before I started doing this, the reels were harder to
>> load and the film seem to bind.  I do not have this problem with my newer
>> reel which were not subjected to the photo-flo.
>
>
>
>--
>Nathan Wajsman
>Overijse, Belgium
>
>General photo page:  http://members.tripod.com/belgiangator/index.html
>Belgium photo page: http://member.xoom.com/wajsman/index.htm
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>
>