I rate Delta 100 120 Roll film and 4x5 sheet film at EI 80, meter for the shadow detail and develop in 1:1:100 Pyrocat for 11 minutes at 20 deg C. I agitate gently for 5 seconds per minute. I follow development with a water rinse and then fix in a non-hardening akaline fixer followed by the water saving wash procedure recommended by Ilford. I use either boiled deionized water or 18 megaohm deionized water in all processing solutions to avoid problems with dissolved oxygen. My results are very consistant - clean, uniformly developed negatives that are sharp, show high acutance, and are fine grained. They print well on silver paper and scan well.