In May 2017, a new regulation called The Tobacco Products Directive (TPD) came into effect. One of the main changes was to limit nicotine-based E-liquids to a maximum size of 10ml. This birthed a new type of E-liquid; Shortfills.
We're sure you’re aware of what shortfill E-Liquids are by now, but for those who are none the wiser, short fills are larger bottles of Nicotine-free E-liquid with extra space for a nicotine shot at the top. As shortfill bottles do not contain any nicotine, they are fully compliant with TPD regulations.
They are incredibly popular, as they are an excellent way of getting more of your favourite e-liquid in a larger bottle.