I saw no effervescence and the prints
were no weak at all. Perhaps, it has something to do with the order in which
they are added. As a general rule, I start with FO or AFO then add my pt, then
pd, then what ever contrast agent to the mix. But once again, I use Platinic
Acid, which is the same except for H in place of Na.
Eric Neilsen Photography
4101 Commerce Street
Dallas, TX 75226
Sent: Sunday, November 12, 2006
Subject: Re: NA2 with AFO
I have found that mixing Ammonium Ferric Oxalate with NA2 causes a
yellow insoluble precipitate and effervescence on mixing. The resultant
print is very weak.
NA2 with Ferric Oxalate works fine for me.