As someone about to try Rodinal for the first time, one of its appealiing features is the much-mentioned long shelf life, but I'd like to know whether this refers to just full, unopened bottles or to half full bottles with a certain amount of air in them.
I've sometimes ended up dumping old developer concentrate (usually Ilfosol, which deteriorates rapidly) but wondered whether there would be any mileage in opening a new bottle and decanting it into several smaller, airtight containers. This sort of thing isn't a problem for the pros and high-volume users, but for those of us who develop a couple of films a month, wastage and throwing away chemicals goes "against the grain" (sorry!)
Any thoughts on the above?