Puffs per mL: How to Compare Two Disposables on Liquid
Divide the rating by the mL and two boxes land on one scale.
5 min read
Key Takeaways
- Puffs per mL is the puff rating divided by the liquid capacity, and it tells you how much liquid each rated puff has behind it.
- The HyperBar MX120K rates 120,000 puffs on 40mL, which works out to 3,000 puffs per mL.
- The Geek Bar Pulse X 2 rates 50,000 puffs on 18mL, which is about 2,780 puffs per mL.
- The Lost Mary MO20000 Pro rates 20,000 puffs on 18mL, which is about 1,110 puffs per mL.
- A lower puffs-per-mL figure means more liquid per puff, so the rating is counted on a longer, fuller draw.
Puffs per mL is a disposable's puff rating divided by its e-liquid capacity in milliliters. It tells you how many rated puffs the maker counted from each milliliter of liquid, and so how much liquid each puff has behind it.
Why the Puff Number Alone Misleads
Two devices with the same puff rating can hold very different amounts of liquid. The rating is the maker's count on a machine that takes short, even draws, and a maker that counts shorter draws gets a bigger number from the same e-liquid capacity. The puff count on the box tells you how the maker counted, and the mL tells you what is actually inside.
Dividing one by the other puts both devices on the same scale. A device with a high puffs-per-mL figure was rated on small, light puffs, so a person who takes long draws will fall further short of its number. A device with a low figure was rated on fuller draws, so its number is closer to what a long-draw user will see.
The three devices below span a wide range on purpose. One rates 120,000 puffs, one 50,000, and one 20,000, and two of them hold exactly the same 18mL.
The Two Terms, Defined Once
The puff rating is the number the maker prints on the box, counted under its own test method, usually on the device's gentlest mode. It is a ceiling, not a promise, and no two makers count it the same way.
The liquid capacity is the mL of e-liquid sealed in the device when it leaves the factory. Unlike the puff rating it is a physical quantity, and it is the number that actually runs out.
Three Devices on One Scale
| Device | Puff Rating | Liquid | Puffs per mL | Battery |
|---|---|---|---|---|
| HyperBar MX120K | 120,000 | 40mL | 3,000 | 1000mAh |
| Geek Bar Pulse X 2 50K | 50,000 | 18mL | about 2,780 | 1000mAh |
| Lost Mary MO20000 Pro | 20,000 | 18mL | about 1,110 | 800mAh |
The arithmetic is plain division. The MX120K's 120,000 puffs over 40mL is 3,000 per mL. The Pulse X 2's 50,000 over 18mL is about 2,780 per mL. The MO20000 Pro's 20,000 over the same 18mL is about 1,110 per mL.
What the Spread Tells You
The Pulse X 2 and the MO20000 Pro hold the same 18mL, and the puff ratings differ by a factor of two and a half. The liquid did not change, so the counting did. Geek Bar's rating assumes a lighter puff than Lost Mary's, and that is the whole difference between 50,000 and 20,000 on identical e-liquid capacities.
The MX120K sits above both because it holds more than twice the liquid and is rated on an even lighter puff. Its 40mL is the physical reason it lasts, and its 3,000 puffs per mL is the reason the rating reads as high as it does. Both facts are true at once, and only the mL one is about what is in the device.
All three run a dual mesh coil, adjustable airflow, a screen and USB-C charging, so none of those separate them. The battery sizes are close as well: 1000mAh on the two larger devices and 800mAh on the Lost Mary, all rechargeable. Liquid and counting method are the two things that actually differ.
How to Use the Number
If your draws are short, the puffs-per-mL figure matters less, because your habit is close to the maker's machine. Compare on mL and pick the biggest e-liquid capacity you are willing to carry. If your draws are long, treat a high puffs-per-mL figure as a warning that the rating was counted on a puff smaller than yours, and lean on the mL figure instead.
For a quick rule, divide the puff rating by the mL before you compare two boxes. When two devices land close on puffs per mL, the one with more mL lasts longer. When they land far apart, the one with the lower figure was rated more conservatively, and its number is the one to believe.
The whole disposables range carries both numbers on every product card, and the 50,000-puff group is where the Pulse X 2 and its neighbors sit if that is the size you are weighing.
Which One for You
Pick the MX120K if liquid is the thing you want most, because 40mL is the biggest e-liquid capacity of the three by a wide margin. Pick the Pulse X 2 if you want 18mL rated at 50,000 and you take short draws, since that is the habit its 2,780 per mL assumes. Pick the MO20000 Pro if you take long draws and want a rating counted on a fuller puff, because at 1,110 per mL its 20,000 is the most conservative number on the table.
FAQ
What Is Puffs per ML?
The puff rating divided by the liquid capacity, so the MX120K's 120,000 puffs over 40mL is 3,000 per mL.
Why Do Two 18mL Devices Have Different Puff Ratings?
Because the makers count differently; the Pulse X 2 rates 50,000 and the MO20000 Pro rates 20,000 on the same 18mL.
Is a Higher Puffs-Per-mL Figure Better?
No, it means the rating was counted on a lighter puff, so the MX120K's 3,000 per mL is further from a long-draw user's result than the MO20000 Pro's 1,110.
Which Number Tells Me How Long a Disposable Lasts?
The mL, because that is the liquid that runs out; the MX120K's 40mL is more than twice the 18mL in the other two.
WARNING: This product contains nicotine. Nicotine is an addictive chemical.
