Is there any silver in diazo film?

[wjbtd]

Dear all
There's about 2 tons of circuit board litho for sale in a PCB factory.But some red films are mixed in it (about 20%).I searched on the net and thought it as diazo film which is developed in amonia solution(the worker also told me so).I'm wandering is there any silver in this kind of film.If any,what about the silver content?

Thanks a lot!

 

[cheese]

Sorry to say there is no silver in diazo film.
It contains dyes that react to UV light and is
"developed" by exposure to hot ammonia.