I make up to 60cc at a time, and I use 30cc clear plastic medication cups for measuring my nic/vg/pg that I have in a separate container, then write the date and measurements on the upside-down cup, and place the cup on the bottle top (upside-down), instead of writing the contents on the bottle or an unattached tablet. I just add DIY Flavorshack flavors to small dropper bottles. The Flavor Array line is great since you only have to use 5%. I can re-use the glass dropper bottles over and over.
The med cups show measuring increments, and I find them online for $3.86/hundred. Easy-peezie.
There is also a dilution calculator at Google Play Store......
This works so well for me....I hope others might find it useful as well....