Oh, I was already mixing mine one-shot with a syringe. I assumed everyone else had read the Covington Innovations HC-110 page too.
I just have the dilutions memorized for the tanks I use at this point. Dil B is 9 in 300mL per roll in a Paterson tank, 14 in 450mL for the daylight-loading Jobo. Dil A is twice that, dil H is half.
Do other people have a gaggle of different tank sizes they use, or bounce around all over the dilution scale?