Ok, this may be a very dumb question, but it has flummoxed me and many of the people I have asked. I am working on a solid Rodinal addiction and for the life of me I can't figure out how to measure the stuff appropriately.I am going to start using it at the 1-50 ratio and go from there. I have a two 35mm reel S/S tank that holds about 16oz of liquid. I believe that 16oz is roughly 460ml. So it seems that the ratio for my tank should be 9ml of Rodinal to 450ml of H2O. But there doesn't seem to be a Graduate that measures from 1ml all the way up to 500ml. So do I measure my Rodinal in a small graduate and then add it to H2O already measured in a larger graduate? I didn't think about it until I really tried to figure the actual measurements, but is rodinal really potent enough to be effective at 9ml to 450ml. I know it's true, but it seems nuts. Am I wrong here? Is there an easier way to measure this stuff?