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My reasoning is this I'm thick -- 
When i gather the tubes to initially shake them I find it difficult to keep them in the correct time/developer order so having a number on them helps me cope.
Also if I shoot in varying light conditions I can have a spread of tubes ranging over 4:30 to 11 minutes. And numbering the tubes for this situation is handy.
I have sold my Jobo and only use the tubes as for me they are just perfect. I don't do larger than 5x4 though. |
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