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Understanding the Two Main Types of E-Juices

The juices for e-cigs made commercially consist of a base liquid to which flavours and sometimes nicotine is also added. Presently two base liquids are available, and these are commonly referred to as Propylene Glycol (PG) and Vegetable Glycerin (VG).

With a choice available between the two base liquids, it is imperative for you to know the difference between the two. Moreover, you must understand the different experiences you are going to get from using these liquids.

Propylene Glycol
Propylene Glycol is the most commonly used base liquid for formulating e-cigarette juices. Being clear and flavourless enables it to mix well with other flavours. Moreover, it has a tendency to burn cleanly on an atomizer, which is why it is considered safe for human consumption. This is why PG can even be found in certain medicines, as well as food stuffs, hand sanitizers, perfumes and other cosmetics items as a solvent.

Vegetable Glycerin

VG is a water soluble liquid that also finds its use in food items, cosmetics and medicines. It is an alternative choice to PG in eCigs and tastes sweeter than PG. In addition to this, it can be mixed with PG in various ratios and used for vaping e-cigarette.

Comparing the Two

PG and VG, both are viscous liquids, with PG being thinner of the two. There are atomizers that work better with thinner liquid only, as the thicker VG doesn’t wick well, and may even result in fouling the atomizer after sometime. This thickness issue with VG for the atomizer can be rectified by thinning it with water or alcohol.
If you use the juice in your e-cig, which has only PG, you will need added flavours for taste because PG has little to no flavour of its own. In fact, it is sometimes used as a diluting solvent to lower the concentration of nicotine.

Mixing the Two Flavours

You like the flavour of PG, but want thicker liquid or more amount of vapour that you will get from VG, then the ideal thing to do would be to mix the two. It is advisable to mix VG and PG in varying ratios to get the best experience from both.
PG wicks just fine and the probability of a foul atomizer is also less with it. Thus, you can add a little VG to PG and increase the sweetness of the e-juice as well as the amount of vapour it produces. 50/50 and 80/20 PG/VG mixtures are very common.

Bottom Line

The two solvents are essential part of e-cigarette and e-juices, which is why it is very important to be aware about the two and have clear idea of what you want during vaping.


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