If your Azo was made in Rochester (that is, from any master roll except the last one, which was coated in Canada) you should not develop any longer than 1 minute in amidol. Any Lodima is also a 1 minute paper. I use a 300 watt incandescent bulb suspended 3' above the printing frame and my exposure times range from 10 to 60 beats of the metronome using a 100 beats/minute cadence. Your problem might be the fact that you're using a UV bulb. Try a plain old incandescent light bulb, preferably an R40 flood, such as this one. Azo and Lodima are very sensitive to UV wavelengths.
Even if your Azo is Canadian, the maximum development time is 2 minutes. Most of my prints on Canadian grade 2 develop best at 1'40". Also, you need a denser negative for silver chloride paper than for enlarging paper. That's why Super XX and TMY work so well with it. With those films you can slide your whole scale up the straight line portion of the curve without the shoulder (and there's almost none with these films) clipping the highlights.
Last edited by c6h6o3; 10-08-2010 at 03:31 PM. Click to view previous post history.