Streaking
Stephen R Harrison (SRH@StephenHarrison.com)
Mon, 09 Feb 1998 22:25:37 -0700
I was trying some platinotype paper with a pure palladium and noted
streaking on the final print. A few of the strokes of the brush were
evident in the highlight areas of skies. Am I not applying enough
sensitizer ? I am using a 7x17 negative and am using 36 drops of ferric
oxalate #1 solution, no restrainer, and 36 drops of palladium and 3 drops
of hydrogen peroxide. I applied the sensitizer with a puddle pusher
initially and then smoothed it out with a hake brush and then air dried
with a hair dryer. This normally does not happen with Bienfang so perhaps
the platinotype paper requires more sensitizer. Any one know? I have heard
the hydrogen peroxide must be fresh in order to act as a restrainer. Is
this true and does the age of the H2O2 matter at all?
Stephen Harrison