In "Photo Techniques" a few years ago there was a two part article
called "Mysteries of the Vortex" about water flow in washers.
It was apparently originally printed in a UK magazine. Here are links
to the two parts:
http://www.film-and-darkroom-user.org.uk/forum/showthread.php?t=296
http://www.film-and-darkroom-user.org.uk/forum/showthread.php?p=3486
Worth a read.
John
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On 2010-05-20, at 1:50 AM, Peter Badcock wrote:
Thanks Jean-David,
That's rather depressing to read. I'd love to see the test
details/conditions if possible. Were they testing residual fixer
levels in the paper to a level that is considered archival by today's
standards/consensus ? In the mean time I'll see what I can do to
make it shower over the top.
rgds
Peter
On 20 May 2010 00:11, Jean-David Beyer <jeandavid8@xxxxxxxxxxx>
wrote:
When I got my Zone VI print washer, Fred Picker enclosed a test report
of print washers by a test lab he hired. I assume Zone VI paid for the
testing, so the Zone VI came out first -- about the same as the East
Street print washer that was no longer available. The oscillating
Patterson tested the worst. They found the oscillating feature was of
no use and you got comparable results with it or without it. They made
it work about as well as all the others if they built a gizmo that
showered the water in the top all over the reservoir. But by the time I
read that, I had no interest in making something like that and besides
it was not big enough for 11x14 inch prints.
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