Doozy Vape Co manufactures in Dewsbury, West Yorkshire, and these are the only true shortfills in this catalogue. Every other large bottle here arrives pre-mixed; these arrive deliberately unfinished, and that is the feature rather than an omission.
A 120ml bottle holding one hundred millilitres of liquid at zero nicotine. The absent twenty millilitres is not absent by accident; it is headroom, sized for two ten-millilitre nicotine shots. Twenty bottles across nine sub-ranges.
The arithmetic, which is fixed rather than approximate
Two shots go into the space at the top, you cap the bottle and shake it, and you have a finished 120ml at a strength you chose. Two 18mg shots produce 3mg across the full bottle. Two 15mg shots produce 2.5mg. There is no judgement in that it is volumes dividing into volumes.
What comes in the bottle, though, contains no nicotine whatsoever. That is the most common misunderstanding about the format, and the costliest: somebody who did not expect a 0mg bottle has a refund coming, so every product page in this range sets out the arithmetic rather than assuming it is understood.
Nicotine shots are not currently on this catalogue. That is worth saying plainly here rather than leaving a customer to discover it at checkout.
What you gain by mixing your own
Control over the strength, principally. The format lets you land between the fixed rungs a pre-mixed bottle offers, and it lets you stop at zero, an option nothing else in this catalogue provides.
The cost is a step and a shake. If neither appeals, the pre-mixed 120ml bottles on Ultimate Juice 120ml and Ultimate Puff 120ml, or the 60ml bottles on Nasty Juice, arrive ready to use at a strength already set.
Nine sub-ranges, and why the sub-range stays in the name
Seriously Donuts is the largest at six and the most distinctive, glazed bakery profiles with fruit and biscuit variations rather than fruits with a dessert note added. Seriously Nice contributes three cooled bottles, Doozy Legends three more, including a tobacco whose name gives no hint of it.
Seriously Slushy, Seriously Soda, Seriously Fusionz, Seriously Fruity and Seriously Tropical account for six between them, and Seriously Pod Fill supplies the twentieth.
The sub-range survives into every product title because it is what separates one Doozy fruit from another. Golden Elixir is a case in point: a Doozy Legends bottle, and a tobacco with caramel toffee and vanilla, which nothing in the name would tell you.
One bottle that does not follow the rest
Eight of the nine sub-ranges are mixed 70/30 for sub-ohm hardware. Seriously Pod Fill breaks that pattern. Cool Mint is 50/50 and double concentrated, intended for pod kits and starter devices running at low wattage.
Dropping it into a sub-ohm tank contradicts every hardware note on the page around it, which is why the bottle carries a specification of its own instead of the shared one. It is the single exception in the range and the only one that matters.
Product and variant overview
Twenty bottles across nine sub-ranges: Seriously Donuts (6), Seriously Nice (3), Doozy Legends (3), Seriously Tropical (2), Seriously Slushy (2), and one each from Seriously Soda, Seriously Fusionz, Seriously Fruity and Seriously Pod Fill. All are 100ml of 0mg in a 120ml bottle, 70/30 apart from the 50/50 Pod Fill bottle.
Compatibility and related products
A sub-ohm tank or a higher-wattage device with a mesh coil below one ohm, for eight of the nine sub-ranges.
The Seriously Pod Fill bottle wants a low-power pod kit instead; cartridges for those are on Replacement Pods.
Sub-ohm coils are on Replacement Coils; where a mod takes external cells, the discharge rating it needs is set out on Batteries.
For pre-mixed large bottles rather than shortfills: Ultimate Juice 120ml, Ultimate Puff 120ml and Nasty Juice.
Buying guidance
Know that the bottle arrives at 0mg. That is the format working as designed, not an error in the order.
Work out the strength you want before you order the shots. Two 18mg shots into a Doozy bottle land at 3mg, and the sum does not vary.
Read the sub-range, not just the flavour. Golden Elixir is a tobacco and Berry Blast is cooled, neither of which the names disclose.
The Cool Mint Pod Fill bottle is 50/50 and belongs in a pod, not a tank. It is the one bottle in the range that breaks the pattern.
If you would rather not mix at all, a pre-mixed bottle is the straightforward alternative, and there are three ranges of them here.
Kenya and Nairobi relevance
Shortfills are less common in Kenya than pre-mixed bottles, largely because they require a second purchase to finish. That makes this range the deliberate choice of somebody who wants to set their own strength rather than accept a fixed one. Nairobi orders are dispatched same-day, courier elsewhere.