Reading an E-Liquid Label in 2026: A Quick Guide to Understanding It All

An e-liquid bottle carries more information than it first appears. Nicotine strength, PG/VG ratio, volume, batch number: each detail plays a specific role, and knowing how to read it avoids unpleasant surprises. At myGeeko, we hear the same question often: "how do I make sure I'm picking the right bottle?" This guide goes through, item by item, what a compliant label shows in 2026, and why each detail matters.

The mandatory information, at a glance

An e-liquid bottle sold in Europe follows the TPD (Tobacco Products Directive) regulation. This regulation requires a precise list of mentions, always present on the label:

• Nicotine strength, in mg/ml, never above 20 mg/ml for nicotine-containing products.
• The ingredient list, including the main flavourings.
• The volume, capped at 10 ml for nicotine bottles sold separately.
• The batch number and a minimum durability date.
• Warning pictograms linked to nicotine, when the product contains any.
• The contact details of the manufacturer or the importer responsible for placing the product on the market.

These mentions change little from one manufacturer to another: once you know the landmarks, reading the label becomes a matter of a few seconds.

Nicotine strength: mg/ml, not percentage

In Europe, nicotine strength is almost always expressed in milligrams per millilitre (mg/ml), not as a percentage. A 6 mg/ml bottle carries a lighter nicotine dose than a 12 or 16 mg/ml bottle. As a quick conversion: 10 mg/ml equals 1%. This distinction matters, because a bottle labelled "20" with no unit invites confusion. Always check for "mg/ml" next to the figure, and compare bottles on that common basis before buying.

PG/VG: reading the propylene glycol / vegetable glycerine ratio

The PG/VG ratio, often shown as 50/50, 30/70 or 20/80, indicates the proportion of propylene glycol (PG) and vegetable glycerine (VG) in the liquid's base. PG carries flavour and throat hit more strongly; VG produces more vapour and a softer sensation. A balanced ratio (50/50) suits most compact devices; a VG-rich ratio (70/80) is designed for high-vapour devices. Reading this ratio before buying avoids disappointment, especially if your device is sensitive to liquid viscosity.

Volume, date and batch number

The volume, in ml, should match the format advertised in store: 10 ml for a standard nicotine bottle, sometimes more for a nicotine-free base or a booster. The minimum durability date indicates how long the manufacturer guarantees the stability of flavours and nicotine strength. The batch number, more discreet, matters in case of a product recall or a complaint: it allows the manufacturing to be traced precisely. It is not a decorative mention; it is worth keeping in mind, including by photographing the label before discarding an empty bottle.

Nicotine boosters and nicotine-free base: a different read

Two complementary products deserve a different reading. The nicotine booster, usually a 10 ml bottle at high concentration (18 or 20 mg/ml), lets you adjust a nicotine-free e-liquid yourself. Its label states the exact dosage and the recommended dilution ratio for the target final bottle. The nicotine-free base, for its part, shows a nicotine strength of zero and a clean PG/VG ratio, designed to receive flavourings and booster. Mixing these two products requires following the stated proportions: careful reading, here, directly shapes the final result.

Pictograms and TPD regulatory mentions

Nicotine bottles carry a health warning pictogram, framed by a black border, covering a surface defined by the regulation. This mention reminds buyers that the product contains nicotine and is intended for adults only. Other pictograms signal potential skin or eye irritation from certain ingredients. None of these elements are left to the manufacturer's choice: TPD compliance sets the size, position and exact wording of each warning.

Storing your bottle well, thanks to the label

The label also gives storage clues. A tinted glass bottle (amber or brown) protects the liquid from light; still, keep it away from direct sun and heat. Once opened, an e-liquid keeps its qualities for a few months if the cap is properly closed after each use. Note the opening date on the bottle with a marker if the label does not provide for it: a simple reminder, useful for not keeping an opened bottle too long. Storing bottles upright, cap up, also limits slow seepage around the dropper tip over time, especially with fuller 10 ml formats.

Reading two bottles side by side

When comparing two flavours or two brands, line up the same four figures each time: nicotine strength in mg/ml, PG/VG ratio, volume in ml, and durability date. A bottle that looks cheaper per millilitre sometimes carries a lower nicotine strength or a thinner VG share, which changes the vaping experience rather than just the price. A few seconds spent on this comparison, at the shelf or online, saves a return trip for the wrong bottle.

A simple habit, a safer choice

Reading an e-liquid label takes a few seconds once you know the landmarks: nicotine strength in mg/ml, PG/VG ratio, volume, batch and date. This simple habit helps you choose the right product for your device, compare two bottles fairly, and store your equipment properly. The myGeeko team remains available to guide you through choosing your e-liquids, boosters and bases, whatever your experience level.

Products intended for adults only.