How to Add Nicotine to a Short Fill

A short fill is a large eliquid bottle with no nicotine in it with room in the bottle to add nicotine shot or shots 

Add a 10ml 18mg nic shot to a 50ml short fill to make 60ml of 3mg Liquid

Add 2 x 10ml 18mg nic shots to 100ml short fills to make 120ml of 3mg 

Most short fill bottles only have enough room in the bottle to create a 3mg eliquid