I've got an old, unslotted CE2 in there. I hope the Boge's that are on the way are the same diameter. This is a 12ml from tractor supply. They are half the price of the 20ml versions ($2.00 for 4).
The stopper had to be punched ALL the way through (very thick), but I like the small size. Held about 1.5ml of water external to the CE2.
