Re: lith film

[Judy Seigel <jseigel@panix.com>]

On Sat, 13 Sep 2008, Richard Knoppow wrote:

> >
>    The most common anti-fog agents are potassium or sodium bromide and 
> benzotriazole. The effectiveness of both varies with the pH of the developer. 
> Benzotriazole is supposed to have less effect on film speed for a given 
> amount of fog suppression.
Yes, I practically remember them now, thank you. But not to lose my 
original point, which is that lith film, originally high contrast (to make 
good dots for halftones in commercial repro) and therefore difficult to 
develop as continuous tone, loses contrast as it ages, therefore, in my 
experience and general agreement, OLDER works better for our purposes.

J.