Nicotine shots, otherwise referred to as nicshots or nicotine boosters, are designed for use with short fill e-liquids. These 10ml nic shot bottles can be added to any nicotine free e-liquid whether it be 50ml, 100ml or more. They can also be used for discreet vaping, topping up on nicotine or diluting a juice.
 
Short fill e-liquids are 0mg e juices that are supplied in an eliquid bottle. These bottles leave enough space for nicotine to be added by using nicotine shots.
Short fill liquids are a great way to avoid unnecessarily wasting numerous 10ml bottles, particularly if you are a heavier e liquid user. 
Here are some examples of how much nicotine to add to short fill bottles
 
Achieve 3mg juice from a 60ml bottle
- 60ml shortfill bottle contains 50ml of 0mg vape liquid.
- Add 1x 10ml bottle of 18mg or 20mg flavourless nic-shot.
Total contents = 60ml of 3mg juice.

Achieve 3mg juice from a 100ml bottle 
- 100ml shortfill bottle contains 80ml of 0mg vape liquid.
- Add 1.5 x 18mg or 20mg flavourless nic-shots.
Total contents = 95ml of 3mg juice.

Achieve 3mg juice from a 120ml bottle 
- 120ml shortfill bottle contains 100ml of 0mg vape liquid.
Add 2 x 18mg or 20mg flavourless nic-shots.
Total contents = 120ml of 3mg juice.

Achieve 3mg juice from a 200ml bottle 
- 200ml shortfill bottle contains 150ml of 0mg vape liquid.
Add 3 x 18mg or 20mg flavourless nic-shots.
Total contents = 180ml of 3mg juice.

Achieve 3mg juice from a 250ml bottle 
- 250ml shortfill bottle contains 200ml of 0mg vape liquid.
Add 4 x 18mg or 20mg flavourless nic-shots.
Total contents = 240ml of 3mg juice.
 
Once you have added your nicotine shots, you need to make sure the bottle is shaken vigorously (and make sure the cap has been tightened properly first!). It is also advisable to give the bottle a gentle shake and/or tilt each time you go to refill you tank as some of the thicker flavours don't bond that quickly.
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