How to Add a Nic Shot to a 100ml Shortfill (With Ratio Table)
08 October 2026 · Vapes Direct Wholesale

Shortfills are larger bottles of nicotine-free (0mg) e-liquid, usually 50ml or 100ml, sold in a bigger bottle with space left at the top. That space is for a nicotine shot, a 10ml bottle of unflavoured nicotine. Here is how to add one and what strength you end up with.
Step by step
- Check the bottle size. A 100ml shortfill normally comes in a 120ml bottle, which leaves room for two 10ml shots. A 50ml shortfill normally comes in a 60ml bottle, with room for one shot.
- Remove the nozzle. Most shortfill nozzles pull off with a firm pull or twist. Some have a small tab to help.
- Add the shot. Squeeze the nicotine shot into the shortfill bottle.
- Replace the nozzle and cap, then shake for about a minute so the nicotine mixes evenly.
- Leave it to settle for a few minutes before filling your tank.
Ratio table: final strength
Most nicotine shots are 18mg or 20mg in a 10ml bottle. The table shows the approximate final strength.
| Shortfill | Shots added | Total liquid | With 18mg shots | With 20mg shots |
|---|---|---|---|---|
| 50ml | 1 × 10ml | 60ml | 3mg | 3.3mg |
| 100ml | 1 × 10ml | 110ml | 1.6mg | 1.8mg |
| 100ml | 2 × 10ml | 120ml | 3mg | 3.3mg |
The formula
Final strength = (shot strength × shot ml) ÷ total ml. For example, two 18mg shots in a 100ml shortfill: (18 × 20) ÷ 120 = 3mg.
Which device should you use?
Shortfills are usually high in VG, which gives bigger, smoother vapour. They work best in sub-ohm vape kits and tanks, not in small nic salt pod kits. Browse our shortfills and 100ml shortfills, and read our guide to shortfill e-liquids.
Safety tips
- Keep nicotine shots and e-liquids out of reach of children and pets.
- Wipe up any spills and wash your hands if liquid gets on your skin.
- Label a bottle once you have added nicotine, so you know its strength.
Frequently asked questions
Can I add more than two shots to a 100ml shortfill?
Only if the bottle has space. Most 100ml shortfills come in 120ml bottles, so two shots is the maximum.
Do I have to add a nic shot?
No. Shortfills can be vaped at 0mg if you do not want nicotine.
Can I use nic salt shots?
Yes, some brands make nic salt shots. They give a smoother feel at the same strength. Use the same table to work out the final strength.
Vapes Direct Wholesale sells to adults aged 18 and over only. Vaping products containing nicotine are not for use by non-smokers. This product contains nicotine which is a highly addictive substance.




