I am always on the lookout for new tools to add to my tool box for C41 and RA4 processing. I currently use a Fujimoto CP51 to do my RA4 printing, and I am interested in trying to figure out a way to apply hydrogen peroxide to a roller transport system. The CP51 uses a 6L tank for both the bleach fix and developer. I use Kodak RA developer RT with the additive to reduce oxidation for even lower utilization. I do monitor my chemistry with Kodak control strips and plot the results. From current threads I have found that people have used 3% hydrogen peroxide at a rate of 10ml/L to 20ml/L of RA4 developer. I believe that I also read after an hour the effects of hydrogen peroxide cease to work. If this is true does the developer chemistry return back to its initial state prior to adding the hydrogen peroxide? This short life span of hydrogen peroxide would be ideal for a roller transport system. I could add it, and then use it and after a hour I would be back to regular processing. Any comments would be welcome.