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> MCC110 and selenium |
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#1
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MCC110 and selenium
Has anyone experienced discolouration of the paper base when selenium toning this paper. I would descibe it as a overall light straw colour. The prints were processed in Agfa ne, stop bath and two bath fix in Hypam followed by an hour in a Nova slot washer. The selenium toner is Fotospeed, perhaps a bit strong at 1+12. All chemicals were mixed freshly. My intention was to briefly selenium (60-90secs) followed after a thorough wash by partial weak sepia for the hilights. I can only think I had the selenium a tad to warm. This kind of stain has not happened previously with any other paper I have used with this routine and it is has been my established working method for sel/sepia toning for a number of years.
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#2
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Sorry to hear of your problem
My only suggestion would be a Hypo Clearing Agent pre-toning bath. Tim Rudman in his Toning Booking mentions light discolouration of the paper base if the paper is not sufficiently alkali prior to the Se bath Martin |
#3
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Thank you Martin. I'll try HCA and re read Tim's book. Strange it has only happened with MCC.
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#4
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Not I. I do selenium tone it, in Kodak RST 1+19, typically for 3-4 minutes. Much longer and I get too much eggplant cast for my tastes. But I do wash aid and long soak before toning.
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#5
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Quote:
HCA may not be the answer to your problem - but its an easy one to eliminate. I don't actually use manufactured HCA but a Teaspoon full of Sodium Sulphite per 1L of water and then pour it away at the end of the Toning Session Sodium Sulphite is the main active ingredient in HCA I get mine from Silverprint and a small container lasts me well over a year Good luck Martin |
#6
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Thank you again Martin. I have some Sodium Sulphite, I'll try that and various dilution and temps of selenium this weekend.
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#7
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T tone MC110 in 1:19 KRST for a few minutes without any problems -certainly no change in base colour.
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