After years of doing strictly color, I switched to black and white a few years ago. These are black and white portraits on 2 1/4 and printed usually 16x20 or 20x24. The photographs I framed were starting to yellow in as little as 3 months. My process initially was not very careful but since the problem emerged, I have changed to a two bath fix and even a archival print washer. I use Ilfprd Multi IV RC and dev, stop and fix in Ilford chemistry. Stop-30sec, Fix 1min each bath. Wash 2 minutes in tray and 5 minutes in archival washer. However prints that I drymounted with an Ademco press were the ones that yellowed. I used strictly archival board and archival tissue and release paper in front of the print while in the press. I press for 45 sec at 185deg. A large number of the prints have yellowed but not all and none of the prints that I had done by someone that used a vacuum press have yellowed, even the ones with less than anal chemistry monitoring.(posted 8299 days ago)I have asked Ilford, as well as a number of different pro printers and nobody seems to be able to figure it out. Any ideas would be appreciated and I know, SWITCH TO FIBER BASE.
Thanks, Michael