>Astonishing. I just read the Ilford 2150 data sheet... they manage to process >a sheet of RC paper in 42s including 15s (!) >washing time. I wonder how >archival this is... I think it has to be remembered that the RC papers are designed for fast processing and the RT chemicals also for fast throughput in a lab. The short development and fix time means much less absorption into papers and therefore less washing time to remove residual chemicals. Obviously the best policy is to test for complete fixing and I assume you can adjust washing times at each stage to taste.