What is a Longfill? An Expert Guide

Longfills are a convenient and cost-effective way to create your own larger bottles of e-liquid. Our team of expert mixers has been creating longfills for over many years, and we believe they are a great option for vapers who want more control over their nicotine strength and PG/VG ratio without the hassle of blending multiple flavours.

Usually, when people make DIY e-liquids they will blend together several different flavour concentrates to achieve a finished flavour profile, before adding nicotine and base liquids (propylene glycol and vegetable glycerine). A longfill is way of DIY e-liquid mixing, that takes away the flavour blending part of the process.

Here’s everything you need to know about longfills and how they can improve your vaping experience.

In the UK, it is illegal to sell e-liquids containing nicotine in bottles larger than 10ml. A longfill gets around this by providing a bottle partially filled with flavour concentrate, leaving ample space for you to add your own nicotine and base liquids.

For example, you might receive a 60ml bottle that contains 20ml of flavour concentrate. You then fill the remaining 40ml with your chosen nicotine shots and unflavoured base liquids (propylene glycol and vegetable glycerine) to achieve your desired strength and ratio.

While shortfills are a great option for a quick and easy mix, longfills give you more control over the final e-liquid blend you prefer.

• Longfills are for: Vapers who want to precisely control their nicotine strength, are interested in experimenting with different PG/VG ratios, or simply enjoy the process of making their own e-liquid.

• Shortfills are for: Vapers who prioritize convenience and don’t need as much control over their mix.

If you’re not sure which is right for you, our friendly team is always on hand to help.

Our wide selection of longfills is available here.

To make your life easier, we offer convenient bundle options with many of our longfills. Simply choose the flavour you want, and we’ll provide all the other ingredients you need. Simply fill up your bottle, give it a shake and you’re done. 

If you need more help, check out our DIY Mixing Guides. We also have a handy nic shot calculator, for determining how much nicotine you need to reach your desired strength.