RE: Van Dyke

Hi Bob

Same for me. Just filter the solution (using coffee filter) and use that. I
haven't encountered any problem doing this. My double coated Vandykes are
very nice.

BTW, I didn't controlled your formula. I assume your formula is right.

Regards,

Loris.

  _____

From: redman 2000 [mailto:redman@elmet15.freeserve.co.uk]
Sent: 12 Nisan 2005 Salı 22:07
To: alt-photo-process-l@sask.usask.ca
Subject: Van Dyke

I have just resubscribed to this list after an absence of three years.
Similarly, Ihave restarted my interest in alt photo processes. I would like
to seek advice on a problem I have mixing Van-Dyke sensitiser. Three years
or so ago I successfully mixed a batch of Van Dyke sensitiser. It is still
usable but is almost used up. I tried, three times, to mix another batch but
on each occasion I end up with a bottle 3/4 full of sludge. The formula I
use is : solution A = 10grams ferric ammonium citrate (green) + 35ml of
deionised water; solutionB = 1.5grams tartaric acid + 35 ml deionised water;
solutionC = 4grams silver nitrate + 35 ml deionised water. When all
chemicals are dissolved I add B to A, stirring and then very slowly ( a drop
at a time) add C stirring continuously.

Can any one advise me what I am doing wrong and is there any way I can
reclaim the 'sludge'

Thanks

Bob Redman, UK
Received on Tue Apr 12 13:20:47 2005