I exposed it at ISO 100. The rodinal have been opened around the summer 2010 and have stored dark and cold. I bought the rodinal because it´s a oneshot developer and I´ve read that the rodinal have a long shelflife even when it´s opened.
I´ve thought about to buy HC 110. Is that developer better? Is it a liquid or powder?
///Anders S
How much air is in the container of Rodinal? Is it filled to the top or half empty? If half empty it will oxidize very quicky, even in cold and dark.
HC 110 is great! It is cheap and as it is a syrup it lasts for years and years but it is easy to mix like a liquid. It contains no water so it doesn't oxidize until you dilute it.
If you want smaller grain then Ilfotec DD-X liquid works a bit better with Delta 100 but takes twice as long to develop and it doesn't last that long. Once you open it, you need to finish it within six months and once it is half empty you need to pour it off into a smaller 500mL bottle or it will go even faster. Liquids just don't last.
Another alternative is a powder that's available in small packs. Sadly you can't get Microphen in 600mL packs from Ilford anymore though I have a store here that still has some. You can do 2-3 rolls in Microphen stock or 4-5 at 1:1 or even more at 1:3 as needed with the 600mL package and then toss it, no need to store it at all.