Shortfill e-liquid refers to larger bottles of liquid in 0mg nicotine strength, including 100ml & 250ml bottles that are only filled to 80% capacity, hence short fill. The remaining space allows you to add a nicotine shot/s to create a liquid to your desired nicotine strength as below (or none if you want zero nicotine liquid):
|E-liquid (ml)||Strength of 10ml Nic Shot (mg/ml)||Nicotine Shots||Final Result|
|80||15||1||1.6mg in 90ml|
|80||18||1||2mg in 90ml|
|80||15||2||3mg in 100ml|
|80||18||2||3.6mg in 100ml|
Bottle ready for nicotine shot adding
Remove nib to add nicotine
Add nicotine to bottle
It’s worth mentioning that many nic shots are VG based which is quite thick and in cold weather it get’s thicker. I just sit them in a box on the radiator or in a cup with a bit of hot water in for a while to make the VG become runnier and easy to use.
After you’ve added the required nic shot, replace the nib and cap and shake vigorously to mix it together.
Additionally most eliquid comes in chubby bottles with a thin nib like above. This can make the higher VG liquids harder to squeeze out. I’ve found that cutting the nib down makes it a lot easier to squeeze the bottle to make liquid come out at a reasonable rate, as shown below.