Re: filmscanners: Cleaning slides

[derek_c@cix.co.uk (Derek Clarke)]

Ammonia is also used in bleach for its properties in decolouring of 
dyes... 

lalle@email.com (Lynn Allen) wrote:

> Art had written:
> 
> >> B&W prints and full strength household
> >> ammonia dissolved the emulsion right off the print.
> 
> Alan responded:
> 
> >Ammonia is also quite a  good solvent for metallic silver,
> especially finely divided as in B&W images, so I presume the
> idea was to remove an unwanted relative, politician or other
> bystander from the print!
> 
> 
> This qualifies for the "bon mot" of the day, IMHO! <LOL>
> And Alan, thanks for reminding how amonia is used as a silver 
> cleaner--I'd
> completely forgotten that property (not having much silver to clean, 
> these
> days--just the bullets I save for werewolves). :-)
> 
> All seriousness aside (;-) ), the fact that the silver halides in *color
> film* have been washed away to leave the dye impressions probably makes
> Collin's methods for cleaning color film (previous in this thread) 
> perfectly
> viable. The differences in the film seem to be key, here, and thanks to 
> all
> for a "keeper."
> 
> Best regards--LRA
>