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Phenidone

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Phenidone - reducing agent used in many fine grain solutions.
Phenol varnish - resin used to produce a hard durable top coating.


Hydroquinone, Metol, paraphenylenediamine, and are some of the more commonly used developing agents. PRESERVATIVE All developing agents in an alkaline state are affected by oxygen.

The film was then developed using a developer containing phenidone and hydroquinone, which formed three superimposed negative images, one for each primary color.

Common reducers are hydroquinone, metol, and . AcceleratorThe accelerator is added to the reducing agent to speed development. It also increases contrast.

Developing agents. Chemicals (typically phenidone, metol and hydroquinone) able to change light-struck silver halides into black metallic silver.

MQ/PQ developers
Are developing solutions containing the reducing agents metol and hydroquinone or and hydroquinone.
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A black & white film or paper developer that includes the developing agents phenidone and hydroquinone.
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TMY is admittedly a difficult film to work with. I prefer to use Ilford Delta 400 film for this reason. My best advice is to use a highly dilute, non- developer to help with the highlight problems.

The latent image acts as a catalyst encouraging development to take place faster in exposed areas. Development takes place in both exposed and unexposed areas of the film just at different rates.
Developing agents: Metol, Phenidone, Hydroquinone.

See also: See also: Developer, Film, Image, Hydroquinone, Hydroquinon

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