I don't use beakers except every now and then, for plain PG and plain VG when I'm doing a batch of
eliquid larger than 120mL. Anything 120mL or smaller...I've got marked bottles so I just squirt in the PG and VG to certain marks on the bottles. I
never measure my nic base nor my flavorings with them.
I agree...it wouldn't be good at all, especially for those who
vape lower finished nic mg. An extra mL or so of 100mg nic base could knock their socks off (give them a not so good buzz and then probably a headache, too).
IIRC, I even marked the outside of the box that my 300 little bottles are in, with decent sized red marker letters, so I wouldn't even have to open the box to see what's in it. Still nowhere to be found.