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LongFill Aroma Guide: what it is and how to prepare it
Learn what a LongFill Aroma is, how to prepare it with base and nicokits, how it differs from ShortFill and flavour concentrate, and why each format needs its own mixing guide.
Content for adult users. Handle nicotine carefully, avoid contact with skin and eyes, and keep e-liquids, bases and nicokits out of reach of children and pets.
View all LongFill Aroma1. What is a LongFill Aroma?
A LongFill Aroma is a practical DIY format: a large bottle that already contains a measured amount of flavour concentrate and leaves space to add PG/VG base and, if desired, nicokits.
It is designed to prepare a larger amount of finished e-liquid in a simple way, with fewer calculations than traditional DIY mixing with separate flavour concentrate. Each format has a specific aroma ratio and final capacity, which is why there are separate guides for each size.
Key idea
LongFill Aroma is designed to be completed before use: add base, optional nicotine, shake and let it steep according to the flavour type and the recommendation for each product.
2. Who is LongFill for?
LongFill Aroma is a convenient option for users who want to prepare finished e-liquid with more control and a better cost per millilitre.
Users looking to save
It allows you to prepare more final volume compared with ready-to-vape liquids, adjusting base and nicotine depending on the format.
Users who want fewer calculations
The bottle already includes the measured flavour concentrate, making preparation more direct than with traditional flavour concentrate.
Adults who know their flavours
It is especially practical if you already know which flavour family suits you: fruity, fresh, tobacco, creamy or dessert.
3. LongFill, ShortFill and Flavour Concentrate: quick differences
| Format | What it contains | What you add | Typical use |
|---|---|---|---|
| ShortFill | Ready-made 0 mg e-liquid with free space | Nicokit or base if you want to adjust | Fast preparation with short resting time |
| LongFill Aroma | Measured flavour concentrate in a large bottle | PG/VG base and optional nicokits | Preparing more final volume with fewer calculations |
| Flavour concentrate | Flavour concentrate in a small or medium bottle | Bottle, base, nicotine and percentage calculation | More flexible and customisable DIY mixing |
4. How to prepare a LongFill step by step
This image summarises the general process for preparing any LongFill. The exact amount of base and nicotine depends on the specific bottle format.
General preparation of LongFill Aroma
1. Open the LongFill and prepare the bottle
Open the LongFill bottle and remove the cap and dropper.
2. Add nicokits
Add the nicokits needed to reach your desired strength. To avoid mistakes, always check the specific mixing table for the LongFill format you are preparing.
3. Add nicotine-free base
Add PG/VG base or nicotine-free nicokits until the whole bottle is filled.
4. Close, shake and steep
Put the cap and dropper back on. Shake vigorously for at least 1 minute.
Let it steep for the time indicated on the product page to develop the flavour fully.
5. Enjoy your finished e-liquid
Once the steeping time has passed, your e-liquid is ready to enjoy. Always store the finished liquid in a cool, dark place.
5. Which base and nicotine to use in a LongFill
50VG/50PG base
Balanced and fluid. It usually works well in pods and MTL devices compatible with less dense e-liquids.
70VG/30PG base
More focused on vapour and a smoother draw. It works better in devices with good wicking and coils designed for thicker e-liquids.
Nicokits
You can prepare a LongFill at 0 mg or add nicokits. Remember that final nicotine strength is calculated over the total completed bottle volume.
General nicotine formula
Final nicotine = total mg of nicotine added ÷ total final volume
Example: 1 nicokit at 20 mg/ml in 10 ml contains 200 mg of total nicotine. The final strength depends on the total volume of prepared e-liquid.
6. Steeping: when a LongFill is ready
Steeping helps the flavour integrate with the base and nicotine. The exact time depends on the flavour and the manufacturer’s recommendation.
Fruity and fresh flavours
They usually need less resting time, although it is always best to follow the indication for each product.
Creamy and dessert flavours
They usually benefit from more steeping time so the profile becomes rounder and more balanced.
Tobacco flavours
They may need longer steeping to develop deeper notes and more character.
7. Check the specific guide for your format
This guide explains the general process, but each LongFill has a different ratio: 10/60, 12/60, 14/60, 16/60, 20/120, 24/120, 30/120 and other formats.
To avoid mistakes with nicokits and base, always check the specific guide for the LongFill size you are preparing or the table shown on the product page.
8. Common mistakes when preparing LongFill
Not checking the format
Not all LongFills contain the same amount of aroma or have the same final capacity. The format matters.
Calculating nicotine without final volume
Nicotine is calculated over the total prepared volume, not only over the aroma or the nicokits added.
Using a base that is too thick
A high-VG base may not wick well in small pods or coils with reduced liquid inlets.
Not shaking enough
Shaking strongly for at least 1 minute helps integrate flavour, base and nicotine from the start.
LongFill Aroma FAQ
What is a LongFill Aroma?
It is a practical DIY format with measured flavour concentrate inside a large bottle. It is completed with PG/VG base and optional nicotine until the indicated final volume is reached.
What is the difference between LongFill and ShortFill?
ShortFill is a ready-made 0 mg e-liquid with space for nicotine. LongFill Aroma contains flavour concentrate in a large bottle and is completed with base and nicokits according to the format.
Can I prepare a LongFill without nicotine?
Yes. You can complete the bottle only with PG/VG base or nicotine-free nicokits, respecting the final capacity of the format.
Which base do I need for a LongFill?
It depends on the device and the experience you want. 50/50 is usually more fluid and balanced; 70VG/30PG gives more vapour and requires devices compatible with thicker e-liquids.
How long should a LongFill steep?
It depends on the flavour and manufacturer. Fruity and fresh flavours usually need less resting time; creamy, dessert and tobacco flavours usually benefit from longer steeping.
Choose your LongFill Aroma and always check the specific guide for the format before preparing it.
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