PG & VG Levels In E-Liquid: What's The Difference

PG & VG Levels In E-Liquid: What's The Difference

What Am I Actually Vaping?

Ever wonder what the VG/PG ratio stands for that is written on your favorite bottle of e-juice? No matter how much harm reduction vaping is opposed to combustible tobacco, it is always nice to know what chemicals you are exactly putting into your body.

PG or propylene glycol has been widely used in medicine far before it became a staple component of e-liquid. PG has been used in asthma inhalers since as early as the 40’s when the University of Chicago conducted test on mice about the inhalation of PG and found that it had no harmful effects making it FDA approved and licensed for inhalable medicines, injectable medicines by all authorities. However, on a case by case basis, some people may have a slight allergic reaction due to the inhalation of PG.  PG in e-juice is also meant as a flavor carrying agent and giving you a little “throat kick” aside from the Nicotine.

On the other hand VG or Vegetable glycerin is the other major compound that is found in all e-liquid meant for vaping. And like PG, this product has numerous applications in the personal/medical care field including being found mostly in oral care products. VG or vegetable glycerin is what creates the “clouds” you see when you exhale. This mimics the effects of smoking a cigarette which leads to an easier cessation of combustible cigarettes since this gives the user the same oral fixation.

The ejuices that we are familiar with today are mainly composed of 90% USDA Food Grade VG and PG with 10% of it containing USDA food grade flavoring and a free-base nicotine compound.  We spoke about this briefly in our last blog post about how nicotine salts differ from free base nicotine so check out the link here if you want more info: 

Nicotine Salt Blog

The most popular blend or the standard blend is 70% VG and 30% PG, this gives the ejuice the perfect combination of flavor, clouds and the eliquid is not too thin or too think. When too much VG is used, it is known to gunk up your coils faster. That and if too much sugar or sweetener is added into the ejuice. High VG or Max VG ejuice is normally recommended to be used on an RDA since that would give you optimal flavor and cloud production. Ideally any ejuice around the 70/30 to 80/20 VG/PG range is the standard that you are going to run into. If you run into a juice that states that it is Max VG, that means that the ejuice is composed of <90 % VG.

So when it comes to vaping, there are definitely some important factors to keep in mind about PG and VG. Essentially, the choice comes down to your own personal preference

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  • Blog VProCity
Comments 3

    If you like, you can tend to use mix of both PG and VG in particular ratios, such as 70 VG / 30 PG. This is the optimum ratio for most each uses as it provides a nice throw hit.

  • Doni

    I tried the iClear16 & 30 when they 1st came out & wasn’t too impressed.. The iClear30 s moutithp just bugged me, & the with the iClear16s, I’d either get total dry-hits or extreme gurgling & flooding (seemed to be their thing ) so I kept on looking for something better. Enter June, 2013 when I got the iTasteVV-V3.0 that came with 5 iClear16 clearomizers. Considering their past history, figured they’d go in that extreme emergency pile; noticing they were now stamped VV/VW tho I wondered if anything had been changed. Now, IDK what’s different, but they’re different! (if that makes sense) All I can say is wow, wow WOW! Stellar. I use mostly 50/50 juices & before filling I just unraveled 2 of the wicks about 1/3 of the way up filled waited a few minutes .. & then it was vaping bliss from then on. NO dry hits NO gurgling NO cleaning.. just topping off a few times a day. Been using any/all juice thru it~ with no cracking or fogging either. Oh, AND, I do rotate between a couple devices . but am still using the 1st one outta 5 with it’s original coil (unheard of i know!) nearly 2 months later! I’ve probably tried em all, & with an adaptor that allows me to use my own drip tip . it’s definitely been the best clearo I’ve used to date! (Oakley Gemini comes in a close second) =)

  • Svetlana

    LarryThanks for this review. I am new to this type of ecig use, but not ecigs. I use the Blu (yes, i’m a noob) and that’s pettry easy to use. I like the PCC alot and disposable cartridge with atomizer. Ok, it’s not the best, but it sure is simple to use. Anyway, I ordered the eVic and this Kanger protank to step up my game Coils, wics, ohms, oh my. There seems to be a lot to it. Anyway, your step by step explanation on the Protank really helped me figure out what is what. Can’t wait to start vaping once it shows up!

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