# PG/VG ratio: what to pick for vaping on the go > What the PG/VG ratio changes for throat hit, flavour and coil life, and which balance suits a small pod device used away from home in the UK. Two letters on a bottle decide a surprising amount of your day. The **PG/VG ratio** shapes how sharp the throat hit feels, how clearly the flavour comes through, how much vapour hangs in the air afterwards and how long a coil survives before it starts tasting scorched. When the device in question lives in a pocket and gets used in short bursts, that balance matters more than it does at home. ## What the PG/VG ratio actually describes Every e-liquid is built on two base liquids in some proportion. Propylene glycol, written PG, is thin and carries flavour compounds efficiently. Vegetable glycerine, written VG, is noticeably thicker and produces far more visible vapour. A bottle labelled fifty fifty contains equal parts of the two. One labelled seventy thirty in favour of VG is thicker, sweeter in mouthfeel and considerably more visible when you exhale. Neither is better in the abstract. The ratio only becomes right or wrong once you know what device it is going into, which is why the same bottle can be excellent in one setup and useless in another. The **PG/VG ratio** is therefore less a taste preference than a compatibility question, and getting it wrong is the single most common cause of a pod that tastes burnt within days. ## Why a balanced blend suits small pod devices Small pod devices use narrow wicking channels and low power. They need a liquid thin enough to flow into the cotton as fast as it is vaporised, and thick liquids simply cannot keep up. That is why fifty fifty is the de facto standard for pod use in the UK, with sixty forty in favour of PG appearing on some mouth to lung ranges. Both flow readily, both deliver a defined throat hit, and both leave less residue on a small coil. The failure mode when the balance is wrong is easy to recognise. The wick dries out faster than it refills, the next draw tastes acrid, and the coil rarely recovers from it. Choosing the right liquid consistency for your device is genuinely part of choosing the device, a point worth keeping in mind alongside our guide to [compact pod vapes for city use](/uk/best-compact-pod-vapes-city/). ## What more PG brings, and what it costs PG heavy blends are thin, which means they wick effortlessly and reach a small coil without hesitation. They also carry flavour with more definition, so a complex blend tends to read more clearly. The throat hit is the other headline. PG produces a more pronounced sensation at the back of the throat, which is exactly what most mouth to lung vapers are looking for and exactly what some find harsh. The trade offs are real but modest. Thin liquid is more prone to seeping past a badly seated seal, which is the usual explanation for a pod that weeps into a pocket, and vapour production is visibly lower. That last point is an advantage rather than a drawback in the city. A modest cloud attracts no attention on a pavement, which is precisely the behaviour you want from a device used in shared outdoor space. ## What more VG brings, and where it fails VG heavy blends are thick, sweet in mouthfeel and produce dense vapour. On a sub ohm device with wide wicking ports and plenty of power, they are the obvious choice. On a small pod, they are the wrong tool. Thick liquid struggles to reach the wick, saturates the coil unevenly and shortens its usable life, and the vapour it produces is far more visible than is comfortable in a queue or on a busy street. There is one place VG heavy liquid dominates British shelves, and that is the shortfill format. Larger bottles of nicotine free liquid, designed to have a nicotine shot added, are typically high in VG because they are aimed at sub ohm devices. If you use a pod device, that whole aisle is mostly not for you. Nicotine containing liquid sold ready to use comes in ten millilitre bottles at a maximum strength of twenty milligrams per millilitre, and those bottles are where balanced blends live. ## Matching the PG/VG ratio to your device Start with the coil resistance printed on the pod. Higher resistance coils, roughly one ohm and above, are built for balanced liquid and a tighter draw. Lower resistance coils are built for thicker liquid and more air. Then check what the manufacturer recommends, which is usually printed on the pod packaging rather than on the device. A stated recommendation is worth more than any general rule, including this one. Nicotine salts add a further wrinkle. They are almost always sold in balanced blends because they are designed for pod devices, and they deliver a smoother throat hit at a given strength than freebase nicotine does. The travelling consideration is straightforward. Thin liquid moves more easily under changes in pressure and temperature, so a bottle carried in a bag should be firmly closed and stored upright, alongside the other [vape accessories](/uk/vape-accessories-on-the-go/) that make a day out uneventful. ## Reading a British bottle label UK labels are more informative than they look. Alongside the ratio you will find the nicotine strength in milligrams per millilitre, the bottle volume, an ingredients list and the required warnings. Not every brand prints the ratio on the front. When it is absent, it is usually on the back panel or the product page, and a range that hides it entirely is a range worth being cautious about. Strength and ratio interact. A balanced blend at a higher strength feels sharper than the same strength in a VG heavy liquid, which is why moving between devices often means adjusting the strength as well as the ratio. ## Frequently asked questions ### Which ratio suits a pod device? Fifty fifty, or sixty forty in favour of PG, works with almost every pod on sale in the UK. Both wick easily into small coils. ### Will a VG heavy liquid damage my pod? It will not break the device, but it wicks poorly in a small coil and shortens coil life noticeably. It also produces far more vapour than most pod users want. ### Does the ratio change the flavour? Yes. PG carries flavour more precisely, so a balanced blend usually tastes sharper and more defined than a thick, sweet VG heavy one. ### Is throat hit only about the ratio? No. Nicotine strength and the type of nicotine matter at least as much. The ratio mainly governs flow, flavour clarity and vapour volume. ### Can I mix two bottles with different ratios? You can, and the result sits somewhere between the two. It is more predictable to buy the ratio your device needs than to blend towards it. ## Getting the balance right before you leave the house For a small device used away from home, the answer is consistent: a balanced blend, leaning towards PG if your device has a tight draw and a higher resistance coil. Keep the thick, VG heavy liquids for a sub ohm setup on a table at home, where the wicking and the vapour both make sense. Match the **PG/VG ratio** to the coil rather than to a preference, check the pod packaging before buying a new flavour, and the device will behave. Get it wrong and you will replace coils far more often than you should. The rest of the [e-liquids section](/uk/category/e-liquids/) goes further into strengths and formats. 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.