im curious but what is the shelf life of the Tmax developer? I couldnt find any documentation on it.
From the technical data sheet from Kodak - J86 - http://www.kodak.com/global/en/professional/support/techPubs/j86/j86.pdf
"STORAGE
You can store working-strength solution in a full, tightly
closed bottle for six months, in a half-filled bottle for two
months, or in a covered tank for one month. You can store the
concentrate for up to two years."