So I'm currently setup for basic at home b&w processing, but I'm going to try my hand at the C-41 process soon and I have a question about using my b&w graduates that hold and mix my developer and fixer. I would like to just mix the color developer in my b&w developer graduate and my blix solution in the b&w fix graduate. I'm worried that these could cross contaminate the graduates when I go back to use them for a different process, i.e. getting color contamination in b&w and vice versa. Is this a legitimate issue to worry about, or will a nice thorough washing help avoid these issues? I would appreciate any insight into this, thanks!