I have been influenced by many years of cooking... [smile icon]
I have found that the more concentrated the item is, the more precise you should measure to obtain good results.
After having a chemical engineering student (my son) spend an afternoon teaching me how to form drops, I got lazy and picked up some syringes and decided to work with ml and cc measurements.
I also noticed that my measuring devices (measuring spoons, graduated cylinders, measuring cups, water bottles, and syringes) are all labeled in ml or cc units. Being lazy and valuing precision when working with concentrated materials, I work in ml.