Book publication
October 2019
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MT3 Vario Sulphide Toner
Odourless thiourea toner for indirect sulphur toning

You can alter the ratio between toner and activator. By doing so and by bleaching to varying degrees, it is possible to achieve image tones ranging from bright yellow via gold-ochre to red-brown.
It is important to thoroughly rinse the print before you start bleaching!
How long you have to bleach depends on the paper you use, the image tone desired and the dilution of the bleach bath.
If you don’t want to bleach completely to retain the deepness of the shadows, you have to dilute to at least 1+20 to allow control of the bleaching process. This should result in bleaching times of between 20 seconds and 3-4 minutes. Before toning you have to rinse the print until the yellow cast has completely vanished! Highly diluted bleacher (1+30 and higher) will be removed a lot faster out of carrier and gelatine than strong bleacher solutions (1+10).
The bleach stock has an almost unlimited shelf life.
If the toner starts getting weaker, you can replenish with stock solution.
Toning of the bleached areas is completed after 20 to 30 seconds.
It is possible to use only parts of all stock solutions. Even after opening they are good for years.

Kit 1
Bleacher stock solution: 100ml to make 1-4 litres of working solution
Toner stock solution: 100ml plus 250ml of activator to control the image tone to make 1-2 litres of working solution

Kit 2
Bleacher stock solution: 250ml to make 2.5-16 litres of working solution
Toner stock solution: 250ml plus 1000ml of activator to control the image tone and to replenish to make 5 litres of working solution

If you prefer yellow-brown or deep brown image tones, you need varying amounts of toner and activator. For that reason all stock solutions are available individually.

Examples
Tutorial
Additional informations

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Contact
Wolfgang Moersch Photochemie
Am Heideberg 48
50354 Hürth
Germany

Tel.: +49-2233-943137
Fax.: +49-2233-943138

EMail:
wolfgangmoersch-photochemie.de

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