Mixing Argyrotypes

 
 
In a message dated 18/03/2006 23:54:35 GMT Standard Time, rs@silvergrain.org
writes:

I don't have experience with Argryotype, but I know sulfamic acid
solution does not keep very well. Sulfamic acid (amidosulfuric acid)
decomposes to ammonia and sulfuric acid if kept in aquaous solution
for a long time. Keeping property is worst at high concentration and
high temperature. If you used a stock solution of this agent mixed
some time ago, I suggest to use fresh solution.

Can someone tell me why people go to all this trouble when it is far easier
to produce a salt print or straight Van Dyke print where the final result
can be just as beautiful if not more so.
 
Terry

 
Terry King FRPS

RPS Historical Group (Chairman)

_www.hands-on-pictures.com/_ (http://www.hands-on-pictures.com/)

Moderated Discussion Group

Post message: artaltphot@yahoogroups.co.uk

Subscribe: artaltphot-subscribe@yahoogroups.co.uk
Subscribe _PhotoHistory-subscribe@yahoogroups.com_
(mailto:PhotoHistory-subscribe@yahoogroups.com)
Unsubscribe: artaltphot-unsubscribe@yahoogroups.co.uk

1. An excellent thing is as rare as it is difficult.(Spinoza)
2. A man's reach should be beyond his grasp or what's a heaven
for.(Browning)
3. Frustra fit per plura quod potest fieri per pauciora.(Occam's razor or
'Keep it simple!').
4. Nullius in Verba (Horace), 'Take no man's word for it' (motto of the
Royal Society).
5. If ignorance is bliss, why are not more people happy ? (anon)
Received on Sun Mar 19 04:38:36 2006