Benzotriazol

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livresepuises - 15 May 2005 15:55 GMT

Hello to all of you.
I would like to use Benzotriazol as anti-halo for developing films
exposed and forgotten for 3 years.
How can i mix it into standard developers? Does it change time of
developement?

Thank you.I'm waiting for your answers.

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Jean-David Beyer - 15 May 2005 16:48 GMT

> Hello to all of you.
> I would like to use Benzotriazol as anti-halo for developing films
[quoted text clipped - 3 lines]
>
> Thank you.I'm waiting for your answers.

Do not bother with it. It is an anti-fogging agent, not an anti-halation
agent. Furthermore, it will reduce your apparent film speed. Fog in
negatives is not a problem. Just process normally and hope for the best.

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Richard Knoppow - 20 May 2005 23:21 GMT

> Hello to all of you.
> I would like to use Benzotriazol as anti-halo for
[quoted text clipped - 5 lines]
>
> Thank you.I'm waiting for your answers.

Benzotriazole is a good antifog agent, I think this is
what you mean. However, anti-foggants are not very useful
for film that has been exposed because they tend to suppress
some of the latent image, just the opposite of what you
want. The probability is that the film will develop normally
despite the long interval between exposure and development.
I would not give it any special treatment. Most modern film
has very good latent image stability although it tends to be
better for slow films than fast ones.
Let us know the results you get.

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Richard Knoppow
Los Angeles, CA, USA
dickburk@ix.netcom.com

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