How long a bottle lasts, and why nobody can answer that exactly.

Bottle life is one of those questions with a real answer that nobody likes because the real answer is a range. Two people standing at the counter with the same kit and the same bottle will go through it at very different speeds. A 30 mL bottle can last three days for a heavy vaper on a warm pod, and stretch most of a month for a light vaper on a tighter pod. Nothing about that is broken. It is just the combination of how the device is set up and how often the person reaches for it.

Salt nicotine usually ships in 30 mL bottles. Freebase often comes in 60 mL or 100 mL bottles, which are designed for sub-ohm kits that go through liquid faster. If you find yourself buying a new 30 mL every week, a 60 mL bottle is the practical move. The cost per mL drops, the trips to the store drop, and you waste less time on the small stuff. Always check that the strength you want is available in the larger size; some salt strengths are only stocked in 30 mL bottles by provincial rule.

The number on the pod box, written as something like 0.6Ω or 1.2Ω, has a direct effect on how fast you burn through a bottle. Lower-resistance pods vapourize more liquid per pull. Higher-resistance pods vapourize less. Same bottle, same person, same juice; the resistance alone can roughly double or halve the bottle's life. If you have ever switched pods inside the same kit and noticed the bottle suddenly seems to disappear, that is exactly why.

How often you pick the kit up is the second biggest factor. A vaper who takes three small pulls every fifteen minutes will go through far less liquid than one who chains five pulls every time the kit is picked up. The vapour itself is liquid that was vapourized. More vapour means a faster bottle. Most people slowly settle into a personal rhythm in the first month, and the bottle life finds a steady pace.

Lower-resistance pods, anything under about 0.8Ω, heat up faster and run warmer. They produce bigger, more visible clouds per pull. That extra vapour comes directly from extra liquid being vapourized each time. A 30 mL bottle on a 0.4Ω pod for a steady daily vaper often lasts three to five days. The same bottle on a higher-resistance pod for the same person can stretch ten to fourteen days. Nothing else about the device or the juice changed.

Higher-resistance pods, around 1.0Ω to 1.2Ω, heat slower and run cooler. The pull feels tighter and closer to a cigarette. Less vapour per pull means less liquid used per pull. A 30 mL bottle on a 1.2Ω pod for a moderate vaper can last two weeks or more. The flavour reads cleaner and less bold; the trade-off is real but it is also why pod kits with tighter pods are popular for anyone watching their spending.

Walk into the shop on a Tuesday and you can find two regulars on identical kits, identical pods, identical bottles, finishing at completely different times. Puff length is part of it. Pull strength is part of it. Whether the kit lives in a pocket or on a desk is part of it. There is no winning here. The honest answer is that your bottle life will track your own habits, and the only way to know is to try a bottle for a week and notice what happened. Nobody else's number is your number.

Most of the time, fast bottle use is just personal pace. Occasionally it is the kit. Signs that the device is part of the problem: liquid disappearing visibly through the airflow rather than into vapour, a noticeable leak around the pod, gurgling on most pulls, or wet spots on the bottom of the device on the desk where it sits. Any of those means liquid is escaping instead of being vapourized. Fixing the leak gets you back to normal bottle life. The pod refilling guide and the gurgling guide both cover the common causes.

Note the date when you open a fresh bottle.

Use it normally for a full week without trying to ration it.

Look at how much is left at the end of the week.

If a 30 mL bottle is half empty, you are on track for two weeks per bottle.

If it is mostly empty, you are closer to a bottle a week.

If it lasted the whole week with a third left, you are at three weeks per bottle.

Three or four observations is enough to plan your purchases. Most people stabilize within the first month of regular vaping.