HC-110 was designed to replace a number of other developers in commercial applications. The idea was that it could be used at different dilutions, with each different dilution being similar to the commercial developer (D76, etc.) that it was replacing. If you use it with a different dilution, it will behave very similarly to dilution B, except for the development time.
You don't need a syringe to measure 6 ml - just use a small graduated cylinder (35 ml) and pour enough concentrate to raise the level of water in it by 6 ml.
You don't need a syringe to measure 6 ml - just use a small graduated cylinder (35 ml) and pour enough concentrate to raise the level of water in it by 6 ml.

