Kilo

Kilo at VapeShopOnline: A 100ml Shortfill at £9.99 and the Case for Buying Big

There is a moment in most vapers' lives when the 10ml bottle stops making sense. It usually arrives about a fortnight after buying a proper sub-ohm tank, when you notice you are opening a new bottle every other day, the recycling is full of tiny plastic empties, and you have spent more on e-liquid this month than on the device that drinks it. That is the moment the 100ml shortfill exists for, and it is the moment the Kilo 100ml bottle at £9.99 is priced to catch.

Our Kilo collection is deliberately narrow: one product, one price, sold nicotine-free at 0mg in the American 100ml format. What we have written below is not a padded description of a single bottle. It is a working guide to what a 100ml shortfill actually is, what changes when a bottle doubles in size, how the two-shot nicotine arithmetic works, why the VG and PG ratio printed on the label decides more about your experience than the flavour name does, how to keep a coil alive when you are running sweetened liquid through it at 40 watts, and where the maths tips from "buy small and try lots" to "buy big and settle in".

Some honesty about the format first, because most shops will not give you any. A 100ml bottle is a commitment. You are buying roughly ten 10ml bottles' worth of a single flavour in one purchase. If you love it, you have bought yourself a month or two of an all-day vape at a price per millilitre that nothing else on the site can touch. If you do not love it, you own a very large bottle of something you do not want, and no amount of clever mixing rescues that. The whole art of buying at 100ml is knowing whether you are in a position to make that call, and this page is largely about giving you the tools to make it well.

Everything here is written for adults of 18 or over. We age-verify at checkout, we stock 100% genuine product through legitimate UK distribution, UK delivery is free once your basket clears £20, and orders placed before 4pm on a working day go out the same day. If you want to see the format across every house we carry before committing, the shortfill e-liquid collection holds 154 bottles between £3.95 and £19.99. Otherwise, read on.

The American School of Mixing and Why It Tastes Different

Kilo comes out of the American e-liquid tradition, and that tradition is a genuinely different craft from the British one. Understanding the difference will tell you more about whether you will get on with the bottle than any flavour description ever could.

British e-liquid grew up in a market shaped by small bottles, mouth-to-lung hardware and a customer base of adults moving across from cigarettes. That produced a national house style of sharp, bright, high-contrast flavours with a decent throat catch: blackcurrant that bites, menthol that stings, lemon that is properly sour. Flavour intensity was tuned for a small coil at low power, where you only get a mouthful of vapour per puff and every note has to land inside it.

The American scene grew up around big hardware. Sub-ohm tanks, rebuildable atomisers, high wattage and 100ml or 120ml bottles were the norm years before they were common here. When you are vaporising three or four times more liquid per puff, flavour design changes completely. Notes that would be overpowering in a small mouth-to-lung device become balanced; layered blends that need a big volume of vapour to separate out finally have room to breathe. The American house style therefore leans rounder, sweeter and more constructed: cream, custard, bakery, milkshake and dessert profiles built in several layers rather than one bright hit, and fruit blends that are ripe and full rather than sharp.

Neither approach is better. They are answers to different hardware. But it explains a common complaint you will read online, that American juice tastes flat or muted, and the answer is almost always that it is being run at too low a power in too tight a device. Put the same liquid through a mesh coil at 45 watts and it opens up.

What this means for the bottle in front of you

The Kilo 100ml shortfill is sold at 0mg, which means it is a base you finish yourself, and it is bottled at the size that American mixing culture standardised on. Buy it if you run a sub-ohm setup and want something with more body than the typical British sharp fruit. If your hardware is a tight pod and your taste runs to bright and sour, our Vampire Vape shelf, 42 products from £2.49, is far more your territory.

What Actually Changes When the Bottle Doubles: 100ml Against 50ml

People assume a 100ml shortfill is simply two 50ml shortfills in one container. Six things change, and only two of them are about volume.

The headroom doubles

A 50ml shortfill is a 60ml bottle with 10ml of space for one nicotine shot. A 100ml shortfill is a 120ml bottle with 20ml of space for two. That is why 100ml bottles look enormous on a shelf: the container is bigger than the number on the label by a fifth.

The mixing gets slightly fiddlier

Two shots means two bottles to open, twice the pouring, and a much larger volume to agitate properly. A 120ml bottle of thick high-VG liquid needs a solid two minutes of shaking to homogenise, not the perfunctory rattle that does the job on a 60ml.

The cost per millilitre drops

Bottling, labelling and shipping cost roughly the same whether a container holds 50ml or 100ml, so the larger format spreads fixed costs over more liquid. At £9.99 the Kilo bottle is 10p per ml before you add anything, which is close to half the going rate for a 50ml shortfill and roughly half what our 5 for £10 nic salt deal works out at.

The flavour risk doubles

This is the one nobody warns you about. Buying 100ml of an untried flavour is a bet, and if you lose it you have lost ten times more liquid than a losing 10ml bet costs. Experienced shortfill buyers manage this by trying a house at a small size first, or by buying big only in a flavour family they already know they like.

The storage requirement changes

A mixed 120ml bottle is a lot of liquid to keep in good condition for the six to ten weeks it might take to get through. Light, heat and air degrade e-liquid, and a bottle you keep opening is a bottle you keep exposing to air. Decanting into a smaller day bottle, available from our accessories range, is the standard answer and costs very little.

The buying rhythm changes

At 10ml you buy weekly. At 100ml you buy roughly monthly or less, which changes how you use free delivery thresholds and deal windows. It is a different relationship with the shop and, for most people, a considerably cheaper one.

Two Nicotine Shots: Getting the Strength Right in a 120ml Bottle

The arithmetic is the same as for any shortfill, just scaled. A nicotine shot is a 10ml bottle of unflavoured base carrying nicotine at 18mg or 20mg per ml, sold separately and fully compliant with the 10ml limit. Multiply the shot strength by the total shot volume, then divide by the finished volume.

• Two 18mg shots into 100ml. 18 multiplied by 20ml gives 360mg of nicotine spread through 120ml of finished liquid, which lands at 3mg per ml.
• Two 20mg shots into 100ml. 20 multiplied by 20ml gives 400mg through 120ml, which lands at roughly 3.3mg per ml.
• One 18mg shot into 100ml. 180mg through 110ml, which is about 1.6mg per ml, a genuinely useful low strength for people who have stepped down over time.

Going above 3mg

If you want 6mg you need four shots, and there is only room for two, so you decant. Pour 20ml of the plain shortfill into a clean empty bottle, then put four shots into the remaining 80ml. That gives you 120ml at 6mg, with 20ml of 0mg base left over to dilute back down if it turns out to be too much. Write the strength on both bottles before you put them away, because two identical unlabelled bottles at different strengths is a mistake everybody makes exactly once.

Why 3mg and not 20mg

Strength has to be read alongside hardware. A sub-ohm mesh coil at 40 watts vaporises several times more liquid per puff than a tight pod coil at 12 watts. At 3mg through a big coil you can be taking on a similar amount of nicotine per puff as somebody on a much higher strength through a small one. Putting 20mg salt through a sub-ohm tank is genuinely unpleasant and is the fastest way to make yourself feel unwell. If your hardware is a pod system, buy purpose-made nicotine salt e-liquids instead, where 582 products cover the strengths that suit tight-draw devices properly.

Mixing technique

Add the shots, cap tightly, then shake hard for two minutes. Invert the bottle repeatedly rather than swirling it; the thin nicotine base and thick flavour base need real turbulence to combine. Then leave it capped in a dark cupboard for several days before judging it. Freshly mixed liquid frequently tastes thinner and sharper than the same bottle a week later.

VG and PG: The Two Numbers on the Label That Decide Everything

Flavour names sell bottles. The VG and PG split decides whether you enjoy them. Every shortfill states it, most buyers ignore it, and almost every complaint about a liquid "not working" traces back to it.

Vegetable glycerine is thick, faintly sweet on its own, and produces dense visible vapour. It is the reason clouds are possible. It is also viscous, so it moves slowly through cotton and needs large wicking channels and real heat to vaporise cleanly.

Propylene glycol is thin and almost tasteless but carries flavour compounds far more effectively than VG does. It also produces the throat sensation that adults switching from cigarettes tend to recognise and want. It wicks fast and works at low power.

Most shortfills sit at 70/30 in favour of VG, some at 80/20, and a small number at 60/40. Nicotine salts and pod liquids usually go the other way at 50/50. The higher the VG, the more vapour, the smoother the throat and the more demanding the liquid is about hardware. The higher the PG, the sharper the flavour and throat and the wider the range of devices that will run it.

The practical decision tree

• Coil below 0.6 ohms, 30 watts or more, open airflow: 70/30 or 80/20 is right, and a shortfill will be excellent.
• Coil between 0.6 and 1.0 ohms in a refillable pod: 70/30 usually works if you prime properly and pause between puffs. Check our refillable vape pods range for devices built to cope.
• Coil above 1.0 ohm, tight mouth-to-lung draw, under 15 watts: high-VG liquid will not wick fast enough and you will taste burnt cotton. Buy 50/50 liquid instead.

Sweeteners, the hidden variable

Beyond VG and PG there is sucralose, the sweetener most modern e-liquids use, and it is not listed as a ratio anywhere. Heavily sweetened liquid tastes fantastic for the first few tanks and then caramelises onto the coil, forming a dark crust that mutes flavour and eventually tastes scorched. American dessert-leaning liquids tend to be sweeter than British fruit blends, which is a straight trade: more satisfaction per puff, fewer puffs per coil. The next section deals with what to do about that.

Driving a Sub-Ohm Setup Properly: Wattage, Airflow and Draw

A 100ml shortfill assumes you own hardware that can drink it. Getting that hardware set up correctly is the difference between the best flavour you have had and a mouthful of hot cotton.

Start below the printed maximum

Every coil has a recommended wattage range stamped on the side, something like 40 to 60 watts. Start at the bottom of it, not the middle, and certainly not the top. Take a few puffs, then step up in increments of five watts until the flavour peaks. Past that peak you get more vapour, more heat and less flavour, plus considerably faster coil death. Most people find their sweet spot in the lower half of the printed range and are surprised by it.

Airflow sets the draw, not the power

Opening the airflow cools the vapour, thins the flavour slightly and makes the draw airier and easier on the lungs. Closing it concentrates flavour, warms the vapour and tightens the draw. Airflow and wattage interact: if you close the airflow you generally want less power, because the same heat is now going into less air. Adjust one at a time or you will never work out which change did what.

The draw itself

Sub-ohm vaping is direct-to-lung. You pull the vapour straight into your lungs in one motion, like taking a breath through a wide straw, rather than drawing into your mouth first as you would on a cigarette or a small pod device. Adults switching over from smoking often find the direct-to-lung draw alien at first, which is precisely why most people start on a tight mouth-to-lung device from our vape starter kits range and move to sub-ohm later, if at all.

Chain vaping is the enemy

The single most common cause of a burnt coil is not high wattage; it is puffing repeatedly with no gap. Cotton needs a few seconds to draw thick liquid back into the coil after each firing. Take a puff every twenty or thirty seconds and a coil lasts weeks. Take six in a row and you will scorch the wick regardless of what wattage you are using.

Match the coil to the liquid, not the other way round

One more thing worth saying before the practical points. People choose a coil because it came in the box and then wonder why a particular liquid disappoints. If you know you are going to run high-VG shortfills, buy the coil built for them: lower resistance, larger wicking ports, mesh rather than round wire. Mesh coils spread heat across a wide surface instead of concentrating it in a spiral, which means more even vaporisation at lower temperatures, better flavour and less scorching of the cotton immediately around the wire. They cost the same as round-wire heads and outperform them on almost every measure with thick liquid. If your tank takes both, there is no real argument for the older design.

Keep the tank topped up

Wicking relies on liquid pressure reaching the ports. Running a tank down to the last few millilitres starves the cotton, especially with thick liquid. Refill at a quarter full rather than at empty, and you will get noticeably longer coil life from the same bottle.

Making Coils Last: The Economics Nobody Puts on the Label

Buying liquid at 10p per ml is a false economy if you are burning through a coil every four days. Coils in our vape coils range run from £4.95 to £12.95 a pack, so coil life is a real line in your monthly vaping budget and it is almost entirely within your control.

Prime properly, every single time

Drip liquid directly onto the exposed cotton visible through the coil's wicking ports until it darkens, screw the coil in, fill the tank, then wait ten full minutes before firing. High-VG liquid moves slowly. Ten minutes of patience routinely doubles coil life. Almost nobody does it and almost everybody complains about coil life.

Break the coil in gently

Run the first tank at the bottom of the recommended wattage range, then step up. A coil fired hard from new tends to develop hot spots in the mesh that never fully recover.

Understand what gunk actually is

The dark residue on a used coil is caramelised sweetener and flavour compounds baked onto the mesh. It insulates the metal from the cotton, which means you push more power to get the same vapour, which bakes on more residue. It is a feedback loop and it is why coils die slowly rather than suddenly. Sweeter liquid gunks faster. That is the whole story.

Things that help

• Lower wattage, within reason, produces less caramelisation.
• Longer gaps between puffs let cotton resaturate.
• Keeping the tank above a quarter full maintains wicking pressure.
• Storing liquid away from light and heat slows the chemical changes that produce more residue.

Things that do not help

Rinsing a mesh coil under a tap and drying it out is a widely shared trick that mostly does not work. You may recover a little flavour for a day, but the cotton is already partially carbonised and you will taste it. Cleaning the tank itself is worthwhile; cleaning the coil is usually not.

The full-cost calculation

Say you use a coil a week at £2.50 each and run 5ml a day. Liquid at 10p per ml is £3.50 a week, coils are £2.50, so hardware consumables are 42% of your running cost. Doubling coil life through priming and pacing saves more money than switching liquid brands ever will.

The Value Case: What 100ml at £9.99 Really Costs You

Convert everything to pence per millilitre and the shortfill argument makes itself.

Kilo unmixed. £9.99 for 100ml is 10p per ml, used straight from the bottle at 0mg.

Kilo with two nicotine shots. Shots are typically about a pound each, so roughly £11.99 buys 120ml of finished 3mg liquid, which is 10p per ml again. As with all shortfills, adding nicotine barely moves the per-millilitre figure because you are adding volume as well as cost.

Against a 50ml shortfill. A 50ml at £9.49, such as the one on our Just Juice page, works out at 19p per ml. The 100ml format is close to half the price per millilitre. That gap is the entire argument for buying big.

Against nicotine salts on deal. Our 5 for £10 e-liquid deal gives you 50ml across five bottles for £10, which is 20p per ml. Salts are the right choice for pod hardware, but they are twice the price per millilitre of a 100ml shortfill.

Against prefilled pods. A prefilled pod holds 2ml under the tank rules. Three for £10 in our 3 for £10 prefilled pods deal is 6ml for £10, or about £1.67 per ml. That is roughly sixteen times the cost per millilitre of a 100ml shortfill, and you are paying for a fresh coil and total convenience each time.

The annual number

A sub-ohm user getting through 5ml a day uses about 1,825ml a year. At 10p per ml that is roughly £183 for a year of liquid, before coils. The same consumption through prefilled pods would be several times that. Nobody changes format over one purchase; they change over the annual figure, and this is what it looks like written down.

Clearing the delivery threshold

Free UK delivery starts at £20. One 100ml bottle at £9.99 plus two nicotine shots gets you close; two bottles clears it outright and gives you a spare in the cupboard, which is sensible given that unopened shortfills keep well. If you are topping up a basket anyway, our sale section runs to 2,511 discounted lines from £2.49.

When a 100ml Bottle Is the Wrong Purchase

We would rather you bought the right thing than the biggest thing. There are several situations where a 100ml shortfill is a mistake, and they are worth stating plainly.

You have never tried the flavour

The cheapest millilitre in the shop is worthless if you do not want to vape it. If you are exploring an unfamiliar house or flavour family, buy small first. A handful of 10ml bottles from our e-liquid range, 736 products from £2.49, costs less than one wrong 100ml decision and teaches you far more about your own palate.

You use a closed pod or a big-puff device

Prefilled pods and sealed big-puff rechargeables cannot take bottled liquid. Refilling a pod designed to be disposable produces leaks, flooding and dry hits, and it does not save money once you account for the pod you ruin. If that is your hardware, spend the money in our big puff vapes range instead, where 1,550 products run from £2.99 to £14.99.

You get palate fatigue quickly

Some people can vape one flavour for a month; others need to rotate every few days or everything starts tasting of nothing. If you are in the second group, one 100ml bottle is a slow-motion problem. You will do better with several smaller bottles and a rotation, which is precisely what our nic salt multi-packs are built around.

You vape occasionally

At 1ml a day a 120ml mixed bottle lasts four months. Nicotine oxidises slowly over time, and flavour compounds fade, so the last third of that bottle will not taste like the first third. Occasional vapers get better results from smaller bottles bought more often.

You are still working out what you like

The first three months of vaping are an education, and most people change their mind about strength, hardware and flavour family at least twice during them. Buying in bulk during that period locks in decisions you are not ready to make. There is nothing wrong with paying a slightly higher price per millilitre for a while in exchange for the freedom to change your mind cheaply. Once your preferences have settled, and you will know when they have because you will find yourself reordering the same thing without thinking about it, that is the point to start buying at 100ml.

You have nowhere sensible to keep it

Large bottles of liquid, and nicotine shots in particular, need to be stored securely out of reach of children and pets. That is not negotiable, and it is a genuine reason to keep less liquid in the house rather than more.

Kilo Against the Other E-Liquid Houses We Stock

One bottle is not a range, so here is an honest map of where else to look and what each alternative is better at.

Kingston: more choice at the same size

Our Kingston collection runs six shortfills between £3.95 and £8.99, mostly at 100ml, spanning several distinct sub-ranges. If the 100ml format appeals but you want options rather than a single bottle, and you want the lowest possible price per millilitre, Kingston is the obvious next click. Kilo's counter-argument is the American mixing style rather than the price.

Just Juice: the mid-size alternative

Just Juice sits at 50ml for £9.49 with an exotic fruit and ice profile. Half the volume, double the price per millilitre, but a far smaller bet on an unfamiliar flavour and a much simpler one-shot mix. It is the sensible way to try a house before you commit to a large bottle.

Doozy: the British volume house

Doozy carries 106 products from £2.69 and is one of the longest-established British mixers, present in both small bottles and larger formats. If you want breadth of choice above all, start there.

Dr Frost and Vampire Vape: the specialists

Dr Frost builds everything around ice at £7.99 a bottle. Vampire Vape is the classic British flavour-forward house with 42 products from £2.49. Both are the opposite of the American rounded style: sharper, cooler, more assertive.

If you decide shortfills are not for you

That is a perfectly reasonable conclusion, and the answer is nicotine salts in a pod device. Our nicotine salt collection holds 582 products between £2.49 and £3.95, ready-mixed at fixed strengths, no shots, no shaking and no waiting. Different system, different economics, entirely valid choice.

The UK Rules Behind the Bottle: TPD, the Disposable Ban and Why Shortfills Survived

The shape of every product on this site is set by law, and shortfills in particular exist as a direct response to it. Worth understanding, because it explains why the market looks the way it does.

The core limits

Under the framework the UK inherited from the Tobacco Products Directive, nicotine-containing e-liquid may not exceed 20mg per ml, may not be sold in containers larger than 10ml, and tanks or pods holding it are capped at 2ml. Products must be notified to the regulator, labelled with warnings and fitted with child-resistant and tamper-evident closures. None of that applies in the same way to liquid containing no nicotine, which is why a 100ml bottle at 0mg is entirely legal while a 100ml bottle at 3mg would not be.

The single-use disposable ban

Single-use disposable vapes are no longer sold in the UK. The environmental case against them, millions of lithium cells and plastic housings a week going into general waste, proved decisive. What replaced them is the big-puff rechargeable: a device with a USB-C port, a replaceable or refillable prefilled pod and a battery designed for repeated charging rather than one life. The puff numbers are far higher, the housings are reused, and the format now dominates. Our disposable vape section, 1,559 products from £2.99 to £14.99, carries the compliant rechargeable devices that took their place.

Why shortfills were untouched

Shortfills sailed through all of this because they were never a nicotine product on the shelf. A 0mg base in a large bottle sits outside the container limit by definition, and the separately sold 10ml nicotine shot is fully compliant on its own terms. The format was designed around the rules from the beginning, which is why it has been the most stable category in British vaping for years while everything else has been reshaped.

Age restriction is absolute

All of it is 18+ regardless of nicotine content. Nicotine-free liquid, hardware, coils and accessories are all age-restricted in our shop. We verify at checkout and the courier may verify again at the door. We make no health or medical claims about any product we sell, and nothing on this page should be read as one; the framing that matters to us is simply that these are products for adults, including adults switching from smoking.

Ordering Kilo: Delivery, Authenticity and What to Put in the Basket With It

The practical end, so your first big bottle arrives ready to use rather than half-usable.

What arrives

The Kilo 100ml bottle at £9.99 is 100ml of nicotine-free e-liquid in a 120ml container with a child-resistant cap and 20ml of headroom. Nicotine shots are separate items and are not included, so add two to the basket if you intend to mix to 3mg.

What to buy alongside it

• Two nicotine shots if you want 3mg, one if you want roughly 1.6mg, none if you vape at 0mg.
• A spare coil. Starting a fresh 100ml bottle on a coil that is already three weeks old wastes the liquid, not the coil. Our coil range starts at £4.95.
• An empty bottle from accessories if you plan to decant a day bottle from the big one, which is the single best habit a 100ml buyer can adopt.

Delivery and dispatch

UK delivery is free over £20. A bottle plus two shots plus a pack of coils clears that easily. Orders placed before 4pm on a working day are dispatched the same day for next-day arrival, so a Monday afternoon order is normally vaping by Tuesday.

Genuine stock

Everything we sell is 100% genuine, sourced through legitimate UK distribution. Counterfeit e-liquid and hardware is a real problem in this market and it shows up as inconsistent flavour, poor batch control and packaging that does not quite match. We do not touch it.

Where to browse next

For the full liquid catalogue, the e-liquid range covers 736 products. For the format specifically, the shortfill collection is the right shelf. If you are still choosing hardware, vape kits runs to 2,001 products between £2.99 and £34.99 and is where a sub-ohm setup starts. And if the price per millilitre is what brought you here, sale is worth a look before you check out.

Popular picks from Kilo

Some of what sits in this collection right now:

• Kilo 100ml from £9.99

The full collection runs to 1 products, starting at £9.99. The sort and filter controls make a large range manageable.

Related collections worth a look

The brands you will find here:

• Kilo (1 products)

The main categories, if you want to start again: Nicotine Salt E-Liquids, Sale, Vape Pods, New In, E-Liquids, Disposable Vapes. Spend over £20 and UK postage is included.