Gary Miller (gmphotos@earthlink.net)
Tue, 18 May 1999 22:17:37 -0700
I am looking for knowledge from our collective list regarding scratches on
8x10 film. I know that we have had this come up before, but I would like to
know if anyone else is seeing scratches in the same or similar situation
that I am and if they have any suggested remedies. I am processing Bergger
200 8x10 film in a Jobo 3050 Expert drum on a Beseler motorbase unit using
Rollo pyro at 70F. I am using the protocol from TNPP with some slight
modifications. For instance, I am doing two initial Na metaborate presoaks
for 3 mins each before the developing process. Once the film is developed I
am washing it in an archival washer for 20 minutes. I am seeing scratches,
most of them running along the horizontal (longer spanned) of the film, on
some of the film, maybe 2 or 3 sheets out of the five that fit in the
processing tank at one time. I am wearing latex gloves when I load the film
into the holders, when I take the film out of the holders and load it into
the Expert tank, and then when I take the film and place it into the
archival washer and then when I take it out of the washer. I am very
careful not to handle the film roughly at any point in the process. The
water supply that I am using is double filtered tap water. I am thinking
about switching to a distilled water supply because this was mentioned by
some as the culprit in tray developing. I am also not sure if one or two of
my holders may somehow be scratching the film upon loading or unloading. I
do not want to change too many variables at one time or invest in a couple
of new 8x10 holders if they are not needed. The odd thing is that I am
using the same procedure as I did with my first box of Bergger film in which
I incurred no scratches. The scratches have just appeared now that I have
started using a new box of film. I have also noticed more pinholes with the
second box of film. Any ideas would be greatly appreciated. Thanks
Gary Miller
This archive was generated by hypermail 2.0b3 on Thu Oct 28 1999 - 21:39:34