What Is a Longfill E-Liquid?

Dampfi blog post about mixing longfill e-liquid
August 29, 2019 5 min read

What Is a Longfill E-Liquid?

How to Mix Longfill E-Liquids


 

Longfill e-liquids are becoming more and more popular, so we’re steadily expanding this part of our range. To make sure you know exactly what to do with them, we’ve put together this guide for you on the Dampfi Blog.


 

The biggest advantage, apart from the usually very low price, is that you can choose your VG/PG ratio entirely yourself. You can also reach higher nicotine strengths than with shortfill e-liquids, because longfill bottles leave much more room to top them up. A longfill e-liquid is basically flavour concentrate in a larger bottle; you still need to dilute it with base before you can vape it.


 

 What do you need to make a longfill ready to vape?


Longfill e-liquids usually come in the following bottle sizes and contain these amounts of flavour concentrate: 

  •  60ml bottle with 10ml or 20ml flavour concentrate
  • 100ml bottle with 10ml or 20ml flavour concentrate
  • 120ml bottle with 10ml or 20ml flavour concentrate
Check the individual product description to see exactly what each one contains.

Mixing a longfill e-liquid with nicotine base

Follow this link to see our selection of base that’s (almost) ready-mixed with nicotine. Once you’ve unpacked it, simply pour the included nicotine shots into the large bottle and shake it well.

You can choose from:

  • 50% VG/50% PG with 3mg or 6mg nicotine
  • 80% VG / 20% PG with 3mg or 6mg nicotine
Let’s say you mix a 60ml longfill that already contains 10ml of flavour concentrate using a 6mg base. You’ll end up with a final nicotine strength of just 5mg.
 
Why not 6mg?
 
Because the flavour concentrate already in the bottle contains no nicotine, it dilutes the 6mg base by 1/6. That means the finished nicotine strength works out at 5mg instead of 6mg.
 
 
If you want a higher strength, you should use nicotine shots and 0mg base instead.
 
Why 0mg base?
 
Let’s say you want to mix a 60ml longfill e-liquid that already contains 10ml of flavour concentrate in the bottle to 6mg. As you can see in this table, all you need is two 18mg nicotine shots.
 
One nicotine shot is 10ml, and 10ml of flavour concentrate is already in the bottle = 30ml of e-liquid at 12mg nicotine. But our target is 60ml of e-liquid at 6mg nicotine. That’s why we need another 30ml of nicotine-free base to dilute it to the right strength.
 
Both methods have their pros and cons. In short: if you’re happy with 2-2.5mg / 5-5.5mg, mixing with ready-made nicotine base is easier.

Mixing a longfill e-liquid with nicotine shots

As mentioned, you’ll need 0mg base if you want to add nicotine shots to your longfill e-liquid. To hit one of the strengths shown in the table, always top up your longfill with neutral, nicotine-free base to the required final volume after adding the nicotine shots. Depending on the longfill, that’s 120ml / 100ml or 60ml.

Use this table to see how many nicotine shots you need to get your longfill e-liquid to your preferred strength. Here we only use whole nicotine shots, so 10ml per unit.

Of course, you can also calculate the exact amount you need if, for example, you want a 120ml longfill to end up at exactly 2mg. There are plenty of calculators online - this one is our favourite. Mixing with whole shots is a bit easier, though, and honestly, 0.25mg more or less doesn’t really make much difference to most people.

120ml longfill   100ml longfill   60ml longfill  
Desired strength Nicotine shots needed Desired strength Nicotine shots needed Desired strength Nicotine shots needed
0mg 10x-11x 0mg base 0mg 8x-9x 0mg base 0mg 4x-5x 0mg base
0.75mg 1x 9mg 0.9mg 1x 9mg 1.5mg 1x 9mg
1.5mg 1x 18mg 1.8mg 1x 18mg 3mg 1x 18mg
2.25mg 1x 18mg + 1x 9mg 2.7mg 1x 18mg + 1x 9mg 4.5mg 1x 18mg + 1x 9mg
3mg 2x 18mg 3.6mg 2x 18mg 6mg 2x 18mg
3.75mg 2x 18mg + 1x 9mg 4.5mg 2x 18mg + 1x 9mg 7.5mg 2x 18mg + 1x 9mg
4.5mg 3x 18mg 5.4mg 3x 18mg 9mg 3x 18mg
5.25mg 3x 18mg + 1x 9mg 6.3mg 3x 18mg + 1x 9mg 10.5mg 3x 18mg + 1x 9mg
6mg 4x 18mg 7.2mg 4x 18mg 12mg 4x 18mg
6.75mg 4x 18mg + 1x 9mg 8.1mg 4x 18mg + 1x 9mg 13.5mg 4x 18mg + 1x 9mg
7.5mg 5x 18mg 9mg 5x 18mg 15mg 5x 18mg
8.25mg 5x 18mg + 1x 9mg 9.9mg 5x 18mg + 1x 9mg    
9mg 6x 18mg 10.8mg 6x 18mg    
9.75mg 6x 18mg + 1x 9mg 11.7mg 6x 18mg + 1x 9mg    
10.5mg 7x 18mg 12.6mg 7x 18mg    
11.25mg 7x 18mg + 1x 9mg 13.5mg 7x 18mg + 1x 9mg    
12mg 8x 18mg 14.4mg 8x 18mg    
12.75mg 8x 18mg + 1x 9mg 15.3mg 8x 18mg + 1x 9mg    
13.5mg 9x 18mg 16.2mg 9x 18mg    
14.25mg 9x 18mg + 1x 9mg        
15mg 10x 18mg        
15.75mg 10x 18mg + 1x 9mg        
16.5mg 11x 18mg        

About me -  After three years of vaping and more than two years working in sales in the Zurich and Horgen shops, it was about time for a change of scenery. Somehow, I ended up in the endless depths of the Dampfi office. That’s where, among other things, I discovered an unexpected love of writing — so from now on I’ll be bringing you plenty of informative, pointless, funny, helpful and daft posts.


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