Re: Van Dyke

Hi Loris

I tried filtering as you and Rik suggested. It works fine. I was also interested in your double coating so I tried that as well. It seems to give much better results, although I have had a few failures from careless coating. Perhaps being too impatient and not allowing the first coat to dry enough.

Bob

----- Original Message -----
  From: Loris Medici
  To: alt-photo-process-l@sask.usask.ca
  Sent: Tuesday, April 12, 2005 8:20 PM
  Subject: 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 Sat Apr 16 07:24:39 2005