What is PG and VG?
If you shop around for ejuice, you’ll see a lot of talk about PG and VG, the ratio between them, and how ones juice is better because it uses more of one or the other.
We’ll start by talking about what PG (propylene glycol) and VG (vegetable glycerin) are.
Vegetable Glycerin (VG)
VG is a colorless, odorless sugar alcohol compound.
It is widely used in the food industry as a sweetener and thickening agent.
The pharmaceutical industry uses it as a personal care lotion and lubricant, as well in the making of cough syrup, toothpaste, and mouthwash.
Propylene Glycol (PG)
PG is a clear, colorless liquid often used as a solvent and preservative in food.
leading to some spurious rumors, PG is sometimes used in marine antifreeze as a non-toxic alternative to the traditional blend.
PG is in household vaporizers and humidifier, as it reduces the temperature necessary to vaporize the water.
It is a food solvent, meaning it helps the other ingredients in food products to blend more smoothly. It is found in most cosmetic products, toothpaste, salad dressing, the apple pie at your local grocers bakery, and hundreds of other products you use every day.
How PG and VG used in ejuice
PG is in ejuice for several of its beneficial properties. It has a very low vaporization point, so it helps create the cloud of vapor we all seek.
It is much less viscous (thick) than VG. Adding PG helps keep the ejuice thin enough to flow through atomizers and wicks.
PG’s solvent properties help to blend the flavors and nicotine in ejuice and prevent settling. For this reason, flavor concentrates are almost always PG based.
PG also acts as an anti-microbial agent, helping to prevent bacteria growth.
VG is very viscous (thick). This helps it stick to coils, evenly coating the heating element, increasing the flavor in your vapor.
VG tends to produce far more vapor than PG.
VG tastes slightly sweet, giving a smooth back-note to most ejuice flavors.
What do the ratios mean?
You will see ejuice marketed as 70/30 blends, or as “max VG”. It’s not always clear what this means for the ejuice.
Most store brand ejuice is a 70/30 blend. That is, 70% PG and 30% VG. This produces a thinner juice suitable for any device. PG is also slightly cheaper than VG. The high PG content also contributes to the “throat hit” sought after my most vapers. The downside to a high PG blend is that vapor production is relatively weak, and the taste of PG can overwhelm the flavors in the ejuice.
Some sellers offer a “max VG” blend. It’s nearly impossible to get a 100% VG blend. In order to get these blend thin enough to flow through a tank, or drip on an RDA, the manufacturer will normally add distilled water or alcohol. The downside to max VG blends is that without any PG there is very little preventing bacterial growth. Max VG blends will spoil faster than most juices, and it’s not easy to know what is growing in your tank.
Max VG blends are popular with “cloud chasers”, or vapers who prefer RDAs (rebuildable dripping atomizers). The thicker juice and higher vapor content contribute to a rich, flavorful vapor. With RDAs, throat hit is not as big an issue as with simpler devices, since the vapor volume and flavor are so intense.
Badger Juice is a 50/50 blend. We believe that 50/50 gives us the perfect balance of flavor, and usability. Badger Juice produces rich, thick clouds of vapor, and lets the wonderfully complex flavors of the juice stand out. It’s suitable for all clearomizers, cartomizers, RDAs, and RBAs.
*this post originally appeared at the Vapor Cafe Blog