# E-liquid refills: judging a range by its palette > Flavour families, strengths available, stability over time: the criteria that separate a range of e-liquid refills that lasts from one that does not. Ranges of **e-liquid refills** are usually recommended on technical reliability. That is necessary and insufficient, because almost nobody gives up on a range over a hardware fault. They give up out of boredom. The useful question for a newcomer is therefore not whether the pods leak, it is whether the range will still hold their interest in six months. That is a question about the flavour palette, and it can be assessed before buying anything. ## What makes a range of e-liquid refills last A viable range is not judged on how many references appear on the page, but on how they are distributed across flavour families. A catalogue of thirty fruit variations is narrower, in practice, than a catalogue of twelve spread properly. Four families do the work, and British listings converge on the same set. Tobacco profiles act as a reference point at the start, mint and menthol reset the palate, fruit carries the day, and dessert profiles get used in bursts rather than continuously. A range that neglects one of the four condemns its user to leave it after a few weeks. On a closed system with proprietary pods, leaving the range means changing the device, which is precisely the cost a beginner did not plan for. ## Reading a catalogue of e-liquid refills before you commit The method is mechanical. Open the range page, sort the references into the four families, and see which column is empty. Anything that cannot be placed in a family, a novelty blend or a seasonal one, is a bonus rather than a foundation. The second check is the shape of the system. Prefilled pods lock the palette to whatever the manufacturer publishes, while refillable pods and plain bottles let you take any bottle on the market. That single difference decides whether the flavour range is a fixed constraint or an opening position. This has become a more practical question in the United Kingdom since 1 June 2025, when the sale and supply of single use vapes became unlawful, whether or not they contain nicotine. Readers who arrived through disposables are now choosing between prefilled pods and refillable kits, and the palette question falls differently in each case. The third check is stability over time. A range that quietly rotates its line-up each season is a poor foundation, because the profile you settle on may simply disappear. Ranges that have kept the same core references for years are worth more than a longer list that changes constantly. ## Strength is part of the palette This is the point comparison articles usually treat separately, when it is inseparable from taste: the same flavour does not read the same way at two different nicotine strengths. In the United Kingdom the ceiling is fixed. The Tobacco and Related Products Regulations 2016 cap nicotine containing e-liquid at twenty milligrams per millilitre, limit a refill container to ten millilitres, and restrict tanks to two millilitres, which is why the shelf looks the way it does. Within that ceiling, the type of nicotine changes the experience as much as the number. Freebase nicotine sharpens the hit at a given strength and flattens delicate notes at the top of the range, while nicotine salts are formulated to be smoother at higher figures, which is why they dominate small pod kits. A range that does not offer its headline flavours across several strengths therefore forces a choice between the profile you want and the comfort you want. Checking that your two or three likely flavours exist at more than one figure is a two minute exercise that saves months of compromise. ## Delivery matters as much as the recipe A well built palette counts for nothing if the hardware renders it badly, and this is where the pod or coil comes back into the discussion. The same liquid on two different coils is genuinely two different flavours. The usual failure is drift. A pod that heats unevenly, or a coil left in too long, changes the taste over the last third of its life, which distorts your judgement of a flavour and pushes you to abandon it for the wrong reason. Ceramic and mesh coil designs are both sold on the promise of a more even burn, and the claim is worth testing on a flavour you already know well. Base ratio plays the same role. A liquid heavy in vegetable glycerine feeds a small high resistance coil poorly, which produces dry draws that read as a bad flavour rather than a mismatch. Balanced ratios near fifty fifty remain the default for pod hardware, and the questions of coil and power are covered in our guide to [hardware and settings](/uk/vaping-cbd-kit-and-settings/). ## The method in three questions Before committing to a closed ecosystem, three checks are enough, and they take longer to read about than to perform. Are the four families genuinely represented, or is one of them a token entry. Do the flavours you are drawn to exist at more than one strength. And has the range held its core references over time rather than rotating them. If all three answers are yes, the rest belongs to the pleasure of exploring, which is exactly where a beginner should be spending their attention. Our approach to picking a figure on other product families, set out in the guide to [choosing a CBD strength](/uk/cbd-e-liquid-strength-guide/), follows the same logic of moving one step at a time. There is also value in looking at how established ranges are built, whichever market they come from, since the criteria travel. Our piece on [La Chose French Liquide](/uk/la-chose-french-liquide-brand/) works through a range across three formats for that reason. ## Frequently asked questions ### How many flavours does a range actually need? Fewer than the marketing suggests. A dozen references properly spread across tobacco, menthol, fruit and dessert will outlast a list of forty that sits entirely in one family. Distribution beats volume every time. ### Are prefilled pods more limiting than bottles? Yes, by design. A prefilled pod ties you to the manufacturer's palette, while a refillable pod opens the whole market. That is the trade for the convenience of not handling liquid at all. ### Why does the same flavour taste different in another kit? Because the coil, the airflow and the power applied all change how the liquid is rendered. A profile that reads cleanly on a high resistance pod can turn heavy on a warmer setup, with nothing changed in the bottle. ### What is the maximum nicotine strength on sale in the UK? Twenty milligrams per millilitre, under the Tobacco and Related Products Regulations 2016. The same rules cap a nicotine containing refill container at ten millilitres and a tank at two millilitres. ### Do flavours fade once a bottle is opened? Slowly. Kept closed, away from light and heat, a bottle holds up for months, though the brightest top notes are usually the first to soften. Colour darkening is the practical sign that a bottle has aged. ## Judge the palette, not the product count Choosing between ranges of **e-liquid refills** is not a hardware decision dressed up as a taste one. It is a taste decision with a hardware consequence attached, and the consequence only becomes visible on a closed system, months later, when the flavour you actually want is not in the catalogue. Sort the range into four families, check your likely flavours across more than one strength, and confirm the line-up has held still for a while. Do that before the first purchase and a set of **e-liquid refills** becomes something you stay with by choice rather than by inertia. Editorial content for adult readers only. Vaping products usually contain nicotine, a substance that causes addiction. Not for sale to under-18s in the United Kingdom. This article is not a buying recommendation.