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Guide hub

E-Liquid

Everything that goes into the bottle: nicotine type, strength, VG/PG and the UK rules on bottle size.

7 guides in this topic

E-liquid is the liquid your vape turns into vapour. Every bottle comes down to four choices: the nicotine type, the strength, the VG/PG blend and the flavour. Get the first three right for your device and the flavour is the fun part. Get them wrong and even a great flavour can taste harsh, burnt or weak. This hub explains each choice and the UK rules that shape what's on sale.

Nic salt or freebase

Nic salts feel smoother at higher strengths, which is why pod kits use them at 10mg and 20mg. Freebase feels sharper as strength rises, so it's mostly vaped at lower strengths in bigger sub-ohm kits. The nic salt vs freebase guide explains the difference in full.

Strength

Your device matters more than anything here. Pod kits make a small amount of vapour per puff, so 10mg or 20mg nic salt is normal. Sub-ohm kits make far more, so 3mg or 6mg freebase is typical. Our guide on what nicotine strength to vape helps you pick a starting point and spot when it's wrong.

VG and PG

E-liquid is mostly a blend of vegetable glycerine (VG) and propylene glycol (PG). More PG means a thinner liquid with more throat hit. More VG means thicker liquid and more vapour. Pod coils usually want 50/50; sub-ohm coils want 70/30 VG/PG or higher. The VG/PG ratio guide explains why the blend affects your coil.

The UK rules

Regulation 36 of the Tobacco and Related Products Regulations 2016 sets the limits:

Rule Limit
Maximum nicotine strength 20mg/ml
Maximum nicotine refill bottle 10ml
Maximum tank, pod or cartridge 2ml
Packaging Child-resistant and tamper-evident

These apply to nic salt and freebase alike. Our vape laws hub covers the wider legal picture.

Shortfills and nic shots

Because nicotine bottles are capped at 10ml, larger 50ml and 100ml bottles are sold nicotine-free as shortfills, with room left to add a nicotine shot. One 18mg shot in a 50ml shortfill gives 60ml at 3mg/ml, so the result is low strength and best suited to sub-ohm kits.

How far a bottle goes

There's no fixed puff count for a 10ml bottle. Puff length, power and draw style all change it. Our guide to how many puffs are in 10ml gives a rough range and explains the variables.

Choosing a flavour

Once the technical side is sorted, browse our vape flavours by family, from ice fruits to mints and desserts. For a shortlist of the flavours people come back to most, see the best vape flavours guide.

If you're unsure which liquid your hardware needs, the pods and coils hub explains how coils and e-liquid fit together.

Guides in this topic

Also in this topicThe flavour library: 26 flavours with taste notes

Questions people ask

What's the strongest e-liquid you can buy in the UK?

20mg/ml. UK law caps nicotine e-liquid at that strength, and bottles of nicotine liquid can't hold more than 10ml.

Which e-liquid should I use in a pod kit?

Most pod kits are built for nic salts at 10mg or 20mg in a 50/50 VG/PG blend. Thick high-VG liquids and shortfills suit bigger sub-ohm kits.

Why are big bottles of e-liquid nicotine-free?

Because nicotine e-liquid can only be sold in bottles of up to 10ml. Larger shortfill bottles are sold without nicotine, with space to add a nicotine shot.

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