In article <4lbq4p$5d6@newsbf02.news.aol.com>, user903809@aol.com says...

>I have a 10 cc graduated cylinder that does quite nicely at measuring 9
>cc's. If my partially used bottle of Rodinal goes bad within the next >6 months, I'll let everyone know. [....]

I have used Rodinol from partially filled bottles that are YEARS old -
no problem, it doesn't seem to age (except for color). However, it is
one of my least favorite developers (except for Agfa films) - yucky
tonal quality and grain with most films, I think, compared with D-76.
Hope This Helps