Next to the 10 ml format, there are the large formats, shortfill and longfill. Their advantage? You get the nicotine level you want, completely adapted to your needs. The 50 ml, 100 ml and even 200 ml shortfills are overdosed with flavours.
Once received, they are ready to be boosted in nicotine with nicotine boosters (not supplied). The longfill is the same principle, but a little different. Inside? You find 20 ml of overdosed flavours. And it's up to you to add the PG/VG base of your choice, as well as your nicotine boosters (not supplied). The longfill allows you to obtain a higher nicotine level than with the shortfill.