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Doublers & Nicotine

What is a doubler?

A doubler is a bottle half filled, with double-strength concentrated E-Juice. This enables you to add your own nicotine to our E-Juice at your desired levels.

All doublers need be diluted before vaping.

Why do we sell doublers?

It is against the law to sell or provide nicotine in Australia. But it is legal for you to import your own nicotine supply.

The doubler option gives you the ability to add your own nicotine to our E-Juice whilst keeping the flavor as intended by us. If you were to add a nicotine mix to a ready to vape bottle it would dilute the flavor and taste weak.

Do I need to add anything to my doubler?

Yes you do. As all doublers comes half filled, with double strength concentrated E-juice.

All you need to do is purchase a doubler from us and top it up with your own nicotine solution. Simply add your own PG/VG/Nicotine mix at a 1:1 ratio.

Is it really that hard?

Not at all, just follow these steps:

  • Purchase a doubler

  • Import your own nicotine solution

  • Mix your nicotine solution into your doubler

  • Give it a shake and now you’re ready to Vape!

But what mg/ml of nicotine should I vape?

This is really a personal preference. The best way to decide how much you need is to experiment until you find your preferred nicotine level. Different types of tanks will need different levels of nicotine.

We have compiled some information bellow to help you get started.

I have a sub-Ohm tank, do I need less nicotine?

In general yes.

A sub-Ohm tank will use high powered coils and create more vapour. If you have a sub-Ohm tank you will want to have less nicotine in your E-Juice compared with a standard tank with low powered coils to receive the same ‘Nicotine Hit’.

Suggested nicotine levels.

To make this decision easy follow this guide. This is the final level you want your juice to be made up at after mixing your doubler.

This guide is only a suggestion, remember you can always add more nicotine to your juice so start low and work your way up until you find your desired levels.

For tanks with 0-15 watt coils:

24mg/ml Nicotine: Heavy, Full Strength Cigarettes

18mg/ml Nicotine: Regular

12mg/mL Nicotine: Light 

6mg/mL Nicotine: Ultra-Light

0mg/mL Nicotine: Zero Nicotine

For tanks with 15-45 watt coils:

12mg/ml Nicotine: Heavy, Full Strength Cigarettes

10mg/ml Nicotine: Regular

8mg/mL Nicotine: Light

4mg/mL Nicotine: Ultra-Light

0mg/mL Nicotine: Zero Nicotine

For tanks with 45+ watt coils:

8mg/ml Nicotine: Heavy, Full Strength Cigarettes

6mg/ml Nicotine: Regular

4mg/mL Nicotine: Light

2mg/mL Nicotine: Ultra-Light

0mg/mL Nicotine:  Zero Nicotine

Importing nicotine to add to doublers. Where to now?

Now that you have decided on your nicotine strength you are ready to import your own nicotine solution ready to add to your doubler.

As all our doubler bottles come half-filled, when top up your bottle with your nicotine solution the final nicotine strength will be halved.
Simply put, the nicotine you purchase needs to be double the strength that you want to vape at.

If you want to start vaping at 12mg/ml, then you will need to import 24mg/ml nic.

If you need to further dilute your nicotine solution you can purchase PG/VG from us.

Nicotine can come with PG or VG as the base carrier.

For new users we recommend a 50/50 PG/VG nicotine mix.

I have my nicotine. Now how do I mix up my doubler?

All you need to do is top up your doubler bottle with your nicotine solution.

When you add your nicotine solution to your doubler the final nicotine strength will halved.


If you purchased a 50ml Doubler and you have imported a 24mg/ml nicotine soltion.

Take your 50ml doubler (25ml of double strength E-Juice) and add 25ml of your nicotine solution. Just top the bottle up.

Now give it a shake and you have full bottle ready to vape. The final level of nicotine will be 12mg/ml.

If you need to further dilute your nicotine solution you can purchase PG/VG from us.

Do you need more help?

Here at Vape Hero we understand this process can be a little tricky to understand at first.

If you have any questions please email us at and we will be happy to help in any way we can.