Mr Blue Ohm Brew Nic Salts 10ml 18mg

Overview

The Mr Blue Ohm Brew Nic Salts 10ml 18mg by Ohm in Mr Blue at 20mg. Free UK delivery over £20, same-day dispatch on weekday orders before 4pm.

Ohm Brew Mr Blue 18mg nic salt at a glance

Ohm Brew Nic Salts 10ml 18mg Mr Blue is a 10ml bottle of nicotine salt e-liquid from Ohm, flavoured in the blue-fruit style that has been a fixture of UK vape shop shelves for years. It is a bottle of liquid rather than a ready-made disposable, so it is meant to be poured into a refillable pod kit or another low-power device that is designed to take nic salt e-liquid. If you have recently moved away from single-use vapes and want a refillable setup that still gives you an easy, sweet, no-fuss flavour, this is the kind of product many UK vapers end up choosing.

The key facts in one place:

• Product type: nicotine salt e-liquid, sold as a single 10ml bottle
• Flavour: Mr Blue, a blue-fruit profile in the blue raspberry and blueberry family
• Nicotine strength: 18mg/ml, which works out at 180mg of nicotine across the full 10ml bottle
• Nicotine type: nicotine salt, which feels smoother at higher strengths than freebase nicotine
• Base ratio: nic salt liquids in this category are usually mixed close to 50VG/50PG, so check the label on your own bottle for the exact ratio
• Best suited to: low-power pod kits and mouth-to-lung (MTL) style devices
• Not suited to: sub-ohm tanks run at high wattage, or adding to nicotine-free shortfills without careful calculation
• Minimum age: 18 to buy and to use

The sale of single-use vapes was banned across Great Britain in June 2025, and that change is a large part of why refillable pod kits and 10ml nic salt bottles have become so common. A pod kit and a bottle like this one do the same job as a disposable, delivering nicotine with a pleasant flavour and a gentle throat hit, but you refill the pod instead of throwing the whole device away. Over a few weeks the running cost is usually lower too, which we look at in the value section further down.

This page is written to help you decide whether Mr Blue 18mg suits you before you buy. We go through flavour, vapour delivery, nicotine strength, bottle design, the kind of hardware that works well with it, how to fill and use it, how to fix common problems, and where it sits against other 10ml nic salt ranges. We have tried to be straightforward about what the product is and is not, and where the manufacturer does not publish a detail we say so rather than guess.

Flavour profile: what Mr Blue tastes like

Mr Blue belongs to the blue-fruit group. In UK vaping that label usually means a sweet berry character with a slight tartness and, in many versions, a faint cool or sherbet-like finish. Manufacturers rarely publish a full note-by-note breakdown for their flavours, and we would rather not invent one. What we can do is describe the character that blue-themed profiles tend to share and explain how to judge whether it matches your taste.

On the inhale, expect a sweet, juicy fruit note that sits somewhere between blue raspberry and blueberry. It is the sort of flavour that reads as sugary rather than natural, closer to a boiled sweet or a fizzy drink than to fruit picked from a bush. Behind it there is usually a light tartness that stops the sweetness from feeling flat. If your preference is for realistic, slightly bitter dark berries, this style may feel too sweet. If you enjoy confectionery and soft drinks, it should feel familiar.

On the exhale, blue-fruit liquids generally leave a clean, lingering sweetness on the tongue. Because nic salt liquids are thinner than high-VG shortfills and are vaped at lower power, the flavour tends to arrive quickly and fades fairly cleanly, without a heavy syrupy coating. That makes this kind of liquid easy to vape through the day without feeling cloying.

A few things influence how Mr Blue tastes in practice:

• Device power: lower power keeps the fruit crisp and cooler, while a hotter coil makes it warmer, sweeter and a little more muted
• Coil age: a fresh coil gives the clearest flavour, and a worn coil can make any sweet liquid taste flat or slightly burnt
• Priming: a coil that has not been given a few minutes to soak will taste dry and harsh on the first puffs
• Flavour fatigue: after several days on one very sweet liquid, some people notice the taste fading, which is a normal effect often called vaper's tongue

If flavour fatigue affects you, rotating with a second, less sweet bottle for a day or two usually brings the taste back. Many vapers keep two 10ml bottles on the go for exactly that reason, perhaps one fruit flavour such as Mr Blue and one menthol or tobacco style as a reset.

Because we cannot taste your bottle for you, the safest way to judge is to start with a single 10ml and give it a few days. If the first tank tastes noticeably sweeter or tarter than you expected, check that the coil is properly primed and the power setting is not too high before deciding the flavour is wrong for you.

Performance and vapour delivery

Because this is e-liquid rather than a device, performance depends on the hardware you pair it with. That said, nic salt liquids behave in quite a predictable way, and understanding that helps you set realistic expectations before you buy.

Nic salts are designed for low-power devices. A typical pod kit runs somewhere in the region of 10 to 25 watts with a coil resistance around 0.8 to 1.2 ohms. At those settings the vapour is modest in volume, the draw is tight like a cigarette, and the nicotine is absorbed efficiently even though you are not producing big clouds. If you are expecting thick, billowing vapour, a nic salt in a pod kit is not the right tool. If you want something discreet that satisfies a nicotine craving, it is exactly what the format was built for.

What you can expect in everyday use:

• Throat hit: noticeable but smooth. At 18mg the throat hit is firmer than at 10mg or 12mg, yet nic salts are usually described as gentler than freebase nicotine at the same strength.
• Vapour volume: low to moderate, which suits indoor-friendly, discreet use where you are mindful of others.
• Nicotine delivery: quick and steady. Nic salt is absorbed faster than freebase, so a few puffs are often enough to take the edge off.
• Consistency: flavour and hit stay fairly even through the bottle as long as the coil is healthy.

How long does a 10ml bottle last? That varies a lot between people. As a rough planning figure only, pod kit users often get somewhere between 150 and 300 puffs per millilitre depending on puff length and power, which would put a full 10ml bottle at roughly 1,500 to 3,000 puffs. In day-to-day terms, someone vaping about 2ml a day would finish a bottle in around five days, while a lighter user at 1ml a day would stretch it to about ten. Heavier users who chain vape can go through it faster. Treat these numbers as a guide rather than a promise.

One thing worth knowing is that nicotine salt at 18mg will feel stronger the faster you vape. Taking long, quick puffs one after another delivers a lot of nicotine in a short time and is the most common reason people feel light-headed on a strength that suits them at a slower pace. Take your time, particularly in the first few days.

Nicotine strength guidance: is 18mg right for you?

Eighteen milligrams per millilitre is at the higher end of what is sold in nic salt form in the UK. The legal maximum for nicotine-containing e-liquid is 20mg/ml, and nic salts are commonly sold at 10mg, 12mg, 18mg and 20mg. A bottle at 18mg sits close to the ceiling, so it is a deliberate choice rather than a default.

It helps to understand how nic salt strength compares with other forms of nicotine. A nic salt at 18mg does not feel the same as a freebase liquid at 18mg. Freebase at that level would be harsh and difficult to inhale in a pod kit. Salts are designed to be smoother, which is why 18mg salt is usable at all. As a loose rule of thumb, 18mg to 20mg nic salt is comparable in satisfaction to the 20mg disposables many people used before the ban, and 10mg to 12mg salt suits people who want something gentler.

A simple way to choose a starting strength:

• Heavy smokers (around 15 or more cigarettes a day) or people coming from 20mg disposables: 18mg is a sensible place to start, and some may move to 20mg.
• Moderate smokers (roughly 8 to 15 a day): 12mg is often enough, with 18mg as a step up if you find yourself craving.
• Light smokers or occasional users: 10mg or lower is usually more comfortable than 18mg.
• Never-smokers: nicotine is addictive, and vaping is not recommended if you do not already smoke.

Signs that 18mg is too strong include dizziness, nausea, a racing heart, headaches or a harsh feeling in the throat that makes you cough. If that happens, put the device down, drink some water and consider moving to a lower strength. Signs it may be too weak include craving a cigarette soon after vaping and taking very frequent, long draws to compensate. In that case a higher strength can actually mean you vape less overall, because each puff does more.

The total nicotine in the bottle is also worth knowing. At 18mg/ml, a 10ml bottle holds 180mg of nicotine in total, and a 2ml pod filled with it holds 36mg. Keep bottles out of reach of children and pets, and never drink or swallow e-liquid. If someone does, seek medical help immediately.

If you are trying to stop smoking, a stop smoking service or your pharmacist can advise on combining vaping with other support. This page is general information and not medical advice.

Bottle design and build quality

A 10ml e-liquid bottle is a simple object, but a few details make a real difference when you are filling a small pod at a kitchen counter or on the bus.

Bottles in this size class are made from soft, squeezable plastic with a long thin nozzle. The nozzle is there so that you can reach into the narrow filling port of a pod without the liquid running down the side. The soft walls let you control the flow by squeezing gently. Squeeze too hard and the liquid comes out in a rush, so go slowly and let the bottle recover between squeezes.

The things to look for when your bottle arrives:

• Tamper-evident seal: a ring or seal on the cap that shows the bottle has not been opened before it reached you
• Child-resistant closure: the cap should need a push-and-turn or similar action to open, as required for nicotine liquids sold in the UK
• Nozzle fit: the nozzle should sit firmly in the neck and not wobble
• Label information: product name, volume, nicotine strength, ingredient list, health warning, batch number and a best-before date
• Tactile warning: a raised triangle on the label for people with visual impairments

The 10ml size is not a design choice so much as a legal one. In the UK, nicotine-containing e-liquid in refill bottles is limited to 10ml. That is why you see 10ml nic salts alongside much larger nicotine-free shortfills in the same ranges. Large bottles cannot contain nicotine, so a 10ml format is the only way to buy a ready-to-use nicotine liquid in a single bottle.

We cannot see how every individual bottle is made, and build quality can vary slightly between batches, so check yours on arrival. If the seal is broken, the bottle is cracked or the cap does not close, contact the shop before using it. Store the bottle upright in a cool, dark place away from direct sunlight, because heat and light can darken the liquid over time and change its flavour. A bottle that has been opened is best used within a few months, and you should always check the best-before date printed on the label.

Wipe the nozzle after each fill so the thread does not pick up dried residue. Nic salt liquid can crystallise around the cap and threads if it dries, which is harmless but sticky and can make the cap harder to turn.

Pairing with a device: battery and charging

Mr Blue 18mg contains no battery because it is a liquid. What matters is the battery in the device you put it in. Getting that pairing right is the difference between a good experience and a frustrating one.

Most refillable pod kits suitable for nic salts use an internal battery somewhere between about 400mAh and 1,000mAh, charged by USB-C. A smaller battery keeps the device slim and pocketable, while a larger one lasts longer between charges. For rough guidance, a 500mAh to 800mAh pod kit commonly lasts a moderate user around a full day, but this depends heavily on power setting and how often you vape.

Some practical points on batteries and charging:

• Charge time: most USB-C pod kits take roughly 45 minutes to 90 minutes to charge fully.
• Cable and charger: use the cable supplied with the device and a standard USB charger. Avoid cheap unbranded chargers.
• Never leave it charging unattended: do not charge overnight on a soft surface such as a bed or sofa.
• Do not use a damaged device: if the casing is cracked, swollen or very hot, stop using it and recycle it safely.
• Match the device to the liquid: a low-wattage pod kit is the intended home for nic salts.

It is important to say what this bottle should not go into. Nic salts are not designed for high-wattage sub-ohm tanks. At 50 or 80 watts, an 18mg salt would deliver a huge amount of nicotine in each puff and would be unpleasant to inhale. If you own a sub-ohm kit, you would normally want a freebase or low-strength shortfill setup instead.

Some examples of the kind of hardware people commonly pair with 10ml nic salts include compact refillable pod systems from well-known makers such as Uwell, Oxva, Voopoo and Smok. We do not list specific compatibility for every model here, so check your device manual and the coil or pod resistance before filling. As a general rule, pods rated for 0.6 to 1.2 ohm coils and roughly 10 to 25 watts work well with this style of liquid.

If you are new to refillable devices, a starter kit with a pre-installed coil pod is usually the easiest way in. You can then buy replacement pods when the coil wears out.

Coil and pod guidance

The coil is where the liquid is heated into vapour, and it has a large influence on how Mr Blue tastes and how long a bottle lasts. Understanding the basics helps you avoid the most common problems.

Most pod kits use one of two coil styles. Standard wire coils wrapped around cotton are the traditional choice and give a solid, reliable flavour. Mesh coils use a flat sheet of mesh in place of wire, which spreads the heat more evenly across a larger surface and often gives a smoother, more consistent flavour with quicker ramp-up. Either works with nic salts, and which one you have is usually decided by the pod you buy.

Coil resistance guidance for nic salt liquids:

• 0.8 to 1.0 ohm: a popular range for nic salts. It offers a slightly warmer vape with decent vapour while still suiting an MTL draw.
• 1.0 to 1.4 ohm: a tighter, cooler and more discreet vape that can make flavour feel crisper. Often used with 18mg and 20mg salts.
• Below 0.6 ohm: usually intended for higher power and thicker liquid. Not ideal with a high-strength salt.

A coil usually lasts between one and three weeks, depending on how much you vape and how sweet the liquid is. Sweet flavours such as blue-fruit profiles tend to leave residue on the coil more quickly than menthol or tobacco liquids, so you may find a coil gives up sooner than you expect. Typical signs that it is time to replace it:

• The flavour turns flat, muted or slightly burnt even after priming
• You get a dry or scratchy hit with liquid still in the pod
• The vapour is noticeably thinner than it used to be
• The pod gurgles or spits more than before

Changing the coil early is cheaper than persevering with a burnt one, and it protects the flavour of the liquid you have just paid for. Never run a dry coil to see whether it still works, because that is the quickest way to ruin a new one.

When you switch to a different flavour, it is worth changing the pod or coil as well, because old flavour tends to linger in the cotton and can mix with the new one. Mr Blue is a sweet profile, so if you plan to move to a menthol or tobacco flavour afterwards, a fresh coil makes the difference noticeable.

Who it is for, and who should skip it

Not every liquid suits every vaper. Here is an honest breakdown of who tends to get on well with this product and who would be better served elsewhere.

Mr Blue 18mg is a good match for:

• Adult smokers who want a replacement for 20mg disposables and are happy to use a refillable pod kit
• Vapers who enjoy sweet, fruity, slightly tart flavours rather than tobacco or dessert profiles
• People who want discreet, low-volume vapour with a firm but smooth throat hit
• Anyone looking to cut running costs by moving from single-use devices to refillable pods
• Users who already own a nic salt compatible pod kit and want a new flavour to try

You may want to skip it, or choose something different, if:

• You have never smoked or vaped. Nicotine is addictive and vaping is not recommended for non-smokers.
• You are under 18. It is illegal to sell nicotine vaping products to anyone under 18, or to buy them on someone else's behalf.
• You are pregnant, breastfeeding or have a heart condition. Speak to a healthcare professional first.
• You vape on a sub-ohm tank at high wattage. A nic salt at 18mg is the wrong tool for that setup.
• You find sweet flavours cloying. A menthol, mint or tobacco liquid may suit better.
• You are sensitive to nicotine or want to reduce your intake. A 10mg or 12mg salt, or a lower strength in the same flavour family, is a gentler option.

It is worth making the point that 18mg is not for everyone who simply wants to try vaping. Current smokers who have a heavy habit often find lower strengths unsatisfying and end up going back to cigarettes, which is the outcome nobody wants. At the same time, moderate smokers who start on a high strength often end up with headaches or nausea. Matching the strength to your actual habit matters more than any other choice you make.

If you are unsure, start by looking at how much you smoke now, think about how strong your preferred disposable was, and choose the nearest salt strength. You can always move up or down with your next bottle once you see how you get on. Many vapers find that after a few weeks they settle at a lower strength than they began with.

How to use it: filling, priming and your first few days

Using a bottle of nic salt is simple, but a few small habits will give you a better first week.

Step-by-step filling:

• Switch the device off or, if it has a button lock, lock it. Remove the pod from the battery section if it detaches.
• Open the filling port. This is usually a rubber bung on the side or top of the pod. Do not fill past the maximum line, and never block the central airflow tube.
• Tilt the pod slightly and place the nozzle against the inside edge of the port. Squeeze gently and fill slowly so air can escape without bubbles.
• Stop around two to three millimetres below the top. Overfilling is the main cause of leaks and flooded coils.
• Close the bung firmly and wipe any spilt liquid from the outside of the pod.

Priming a new coil: let the filled pod sit for five to ten minutes before your first puff. This lets the cotton absorb the liquid. If you take puffs before the cotton is saturated, the coil can burn, and a burnt coil cannot be fixed. Take a few gentle puffs without pressing the button, if your device allows it, to draw the liquid through.

Your first few days:

• Take slow, short puffs instead of long, hard ones. Two to three seconds is plenty.
• If you chain vape, you will go through the bottle quickly and may feel light-headed. Pace yourself.
• Keep a note of how many days a bottle lasts so you know when to reorder.
• If you feel unwell, stop and drink water.

Draw style matters. These liquids are designed for mouth-to-lung inhalation, which means drawing the vapour into your mouth first and then inhaling it into your lungs, much like drawing on a cigarette. Direct-to-lung inhalation, where you breathe straight in, is for high-power devices and large clouds, and is not appropriate for 18mg salts.

When refilling, top up before the pod is completely empty. Running a coil nearly dry shortens its life. A good habit is to refill when the pod is about a third full, and to refill at the same time each day so it becomes routine.

When you are finished with the bottle, close the cap tightly, store it upright and keep it away from heat. If a bottle has been open for a long time, give it a gentle swirl before filling to even out the liquid.

Troubleshooting common problems

Most problems with nic salt liquids come down to a handful of causes, and almost all can be fixed at home.

The pod leaks

• You may have overfilled it. Fill to a few millimetres below the top.
• The bung may not be seated properly. Press it firmly in until it is flush.
• The pod may be cracked or worn. Replace it.
• Temperature changes and travelling in aircraft cabins can push liquid out, so keep pods upright and, where possible, empty when flying.

The vape tastes burnt or harsh

• The coil was not primed. Give it longer to soak.
• The coil is worn. Replace it, especially if you vape sweet flavours.
• The pod is running low. Refill before it empties completely.
• The power setting is too high for the coil, if your device is adjustable.

Gurgling or spitting

• Excess liquid is in the airflow path. Wipe the mouthpiece and blow gently through the pod to clear it.
• The pod is overfilled. Remove a little liquid.

Weak flavour or thin vapour

• The coil needs replacing. This is the most common cause.
• You may be experiencing flavour fatigue. Try a different flavour for a day or two.
• The airflow is too open. If adjustable, tighten it slightly.

Sticky residue on the pod or bottle

Nic salts can dry into crystals around threads and rims. Wipe with a damp cloth and dry thoroughly. It is cosmetic rather than a fault.

Dizziness, nausea or headaches

Stop vaping, drink water, get some fresh air and consider a lower nicotine strength. If symptoms persist or you feel seriously unwell, seek medical advice.

Device does not fire

Check the battery is charged, the pod is seated firmly and the contacts are clean. If the problem continues, check whether the device is under warranty and contact the manufacturer or retailer. The warranty on the device is separate from the liquid.

If the liquid itself seems wrong, with an unusual smell, separation, cloudy appearance or an off taste, do not use it. Contact the retailer with the batch number from the label and a photograph of the problem.

Value for money and honest comparisons

A 10ml bottle of nic salt is one of the more economical ways to vape, but whether it represents good value depends on how you compare it.

Against disposables: single-use vapes are no longer legal to sell in Great Britain, but many people remember what they cost. A refillable pod kit has an up-front cost for the device, and after that each 10ml bottle usually costs less than a disposable while providing a larger quantity of liquid. Depending on how much you vape, a bottle at roughly the price of a coffee or two can last several days. Check the current price on this page rather than relying on a figure from us, as prices change.

Against cigarettes: for most regular smokers, vaping costs noticeably less than buying tobacco, though the saving depends on your habit. Vaping is widely considered to carry far less risk than smoking, but it is not risk free, and it is intended for adult smokers who want an alternative.

Against other nic salt ranges: there are plenty of competitors in the 10ml nic salt market, including IVG, Nasty, Dinner Lady, Hayati and Elf Bar liquids. Here is a fair view of where they differ:

• Flavour range: Ohm offers a broad menu of fruit, candy, dessert and menthol styles, similar to most major brands. No single brand owns the blue-fruit category, so the fastest way to compare is to try two or three.
• Price: 10ml nic salts across brands generally sit within a fairly narrow band. Differences of a few tens of pence matter less than whether you actually enjoy the flavour.
• Consistency: well-established brands generally produce consistent batches. Ohm is a recognised name in UK vaping, though we would suggest checking reviews of the specific flavour if consistency is important to you.
• Strengths: some competitors only sell 10mg and 20mg. A range that includes 18mg offers a little more granularity for people who find 20mg slightly too strong.

Against shortfills: if you have a sub-ohm tank and prefer big vapour, a 50ml shortfill in the same flavour family is better value per millilitre. That is a different kind of vaping, and our page for the Ohm Brew Badass Blend 50ml Mr Blue covers it. For pod kits and nic salts, the 10ml bottle is the right product.

The honest summary is that this is a reasonably priced, mainstream product. It is not trying to be cheaper than every rival or to offer anything unusual. It delivers a familiar flavour profile in a convenient format, and for many people that is exactly what they want.

UK rules, safe storage and recycling

Vaping products are tightly regulated in the UK, and it helps to know the rules that apply to a bottle like this one.

Legal limits that apply:

• Nicotine-containing e-liquid is capped at 20mg/ml. Mr Blue at 18mg sits within that limit.
• Refill bottles containing nicotine are limited to 10ml, which is why this product is sold in that size.
• Refillable tanks and pods are limited to a capacity of 2ml.
• You must be 18 or over to buy or be sold nicotine vaping products. Proof of age may be requested on delivery.
• Products must be notified to the MHRA before sale and carry the required warnings and child-resistant packaging.
• Single-use vapes can no longer be sold in Great Britain. If you want a lower-cost alternative, a refillable pod kit with nic salts is the usual route.

Please note that the 20mg limit applies to all nicotine e-liquids, not only to disposables. It means that a salt at 18mg is allowed, but one at 25mg or 50mg is not sold legally in the UK.

Safe storage:

• Keep bottles and pods out of reach of children and pets at all times.
• Store upright, in a cool place away from direct sunlight and heat.
• Do not transfer liquid into unlabelled containers, drink bottles or other packaging.
• Wash your hands and skin if you spill liquid, and wipe up spills straight away.
• If swallowed, call 999 or NHS 111 immediately and have the bottle to hand.

Recycling and disposal:

Empty plastic bottles can generally go into household plastic recycling once rinsed and dry, though practice varies by council, so check your local guidance. Pods, coils and batteries should not go into household waste or recycling bins. Many vape shops and local recycling centres take back vape devices and batteries at drop-off points, and large retailers have obligations to provide take-back. Lithium batteries are a fire risk in bin lorries and recycling plants, so never put them in a bin. Search for a drop-off point near you before you throw anything away.

Treating the device, pods and bottles responsibly is part of what makes refillable vaping more sustainable than the single-use products that preceded it.