One of the more common questions that comes up when talking about short fills is how to reach a given PG/VG ratio. The short fill bottle has a VG/PG ratio, and you might have your nicotine in PG, VG, or some combination of the two. Let’s work through a few examples to see how you can easily get your desired final ratio.
We’ll start with the simplest case first. Let’s say you have a 60ml short fill bottle with 45ml of 70/30 VG/PG liquid in it to start. Your nicotine is 100% PG.
In this scenario, you cannot end up with a 70/30 finished product unless you pre-mix your nicotine to also be 70/30 or remove some of the flavor base from the short fill bottle.