Short Fill E-liquids are underfilled bottles of e-liquids that do not contain any nicotine. They are filled to 80% of their capacity, thus the name short fill. The extra space is for the nicotine shots to be added as per the smoker's preference.
These bottles were introduced as the TPD law does not allow more than 10ml bottles if they contain nicotine. When you purchase a 50 ml bottle and add a 10ml nic shot with 3mg/0.3% nicotine E-juice, the result is a high VG E-liquid in 3mg nicotine strength in 60ml quantity. Available in various sizes ranging from 50ml, 100ml, 120ml, to 150ml, short fill e-liquids are a sure way to make your vaping session a memorable and flavourful one. On the other hand, Nicotine boosters are available in varying PG / VG ratios to suit varying e-liquid composition. Short fill liquids are a great way to avoid unnecessarily wasting numerous 10ml bottles, particularly if you are a heavier e-liquid user.