Truthfully, I'm a K.I.S.S. mixer.
Once I started getting the hang of my flavor bases, I do most of my batches in 10mL bottles (the math is a little easier for me that way.) I'm not hyped on having an exact PG/VG ratio. I measure flavors into my bottle and then top off with my 50/50 base. Even with my flavor measurements, I'm not 100% precise, but I'm in my own ballpark and am content with that. Of the 500-600mL that I've made over the past few months, I've only had about 30mL that I've deemed "completely unvapeable"
I do make note of #drops or approximate mL (if I'm using a pipette), and I'll write that on the label. That way, if it's really great, I can replicate it when the bottle empties.
Other mixers may crucify me, but I'm the one vaping the juice, so I'm not concerned with anything more than that....
Good luck. It's quite fun. Start SMALL and get the hang of things before you launch into 10-flavor mixes
