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Making sodium polysulphide
Measure 150 ml water into a beaker. Add 10g sodium hydroxide and dissolve. Heat till boiling.
Add slowly with vigorous stirring about 20g of flower of sulphur.
The solution changes from light yellow to dark brown and the reaction reaches its limit after 10 minutes of boiling and stirring.
Allow to settle and cool. Decant the dark brown liquid leaving the unreacted sulphur behind.
Moersch Carbontoner is Sodiumsulfide/Selenium. Look up "Agfa 516" which shouldn't be to much different. In some old books such combination toners were referred to as "the" selenium toner. Colour and effect are markedly different from Potassiumpolysulfide toners like the brew cited above based on liver of sulfur + KRST.Ole said:"Old" Viradon was a polysulfide/selenium toner, the only one on the market at present may be Moersch' Carbontoner. As least it seems to have similar properties.
titrisol said:Can sepia toner be used without the bleach?
Will that be equivalent to polysulfide toners?
Expect a different colour and a very slow process.titrisol said:Can sepia toner be used without the bleach?
Will that be equivalent to polysulfide toners?
titrisol said:Can sepia toner be used without the bleach?
Will that be equivalent to polysulfide toners?
dancqu said:Sepia toning is a sulfideing of the silver. A bleach is not needed.
The Hypo-Alums, Nelson's Gold Toner, Kodak's and Agfa's
polysulfide are all direct toners; no bleach.
Ann has mentioned the IPI in connection with toning. The IPI,
the Image Permanence Institute at RIT, concerns itself primarily
with microfilm which has some relavance to B&W prints. At
least to read it does.
As for sulfide, they are all for it. The surprise was in how little
it takes. A most minute amount will do. Sodium sulfide at a dilution
of 1:9,999, or .01%, will impart complete protection. There is no
reason not to use sodium sulfide from there perspective other
than matters of S&h of, 55 gallon drums?
As for oder, I detect none from low percentage solutions. Dan
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