Infrared4143/Platinum Printing

[Annie]

I have some (outdated of course) Kodak HSI film in 4x5...... Any special considerations for exposure and development for use in Pt/Pd printing? Thanks again, Annie

[Jorge]

Give it about 40% more development and pray!
Without testing is hard to tell you which is the best time, basically you are looking for a density range of 1.4 for pt/pd or 1.6 to 1.8 for palladium. Good luck.