5 Factors That Affect E-liquid’s Longevity.

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ecigarette, juul, electronic cigarette @ Pixabay

The vaporization of a liquid solution is a process that commonly involves the use of an e-liquid. E-liquid is a type of substance that, when heated, will produce vapor in order to create the sensation of smoking. There are many different types of e-liquids available on the market today, each with its own unique flavor and duration. These differences are what make vaping so great!

In this article, we look at five factors that can affect how long e-liquid lasts: nicotine levels, PG/VG ratios (a measure of how thick or thin your vape juice is), flavors used in the mix, water content level in your vape juice (how much water is mixed with PG), and room temperature.

Research shows that most people consider the flavor of an e-liquid to fade after some time. In fact, according to “E-Cigarettes: Balancing Risks and Benefits,” approximately 36 percent of people vape with the intention of using their e-liquids for a limited time only. The speed at which one can vape through a 60 ml bottle can vary significantly depending on these five factors.

Nicotine Levels

The nicotine content level in your e-liquid serves two purposes: it affects how much vapor is produced in your device, and controls how quickly e-liquid levels deplete in your tank as you vape.

Nicotine content can be measured in milligrams (mg) or micrograms. Deciding on the best nicotine level for your all day vape is a personal choice. Some vapers enjoy a more “bitter” vape that provides their throat with a nicotine buzz, and others prefer to use juice with less intensity so that they get the same feeling without any additional effects.

Nicotine levels in e-liquid are typically measured by weight or percentage, but there are also devices on the market that measure only milligrams. This is because the majority of e-liquid brands on the market use a PG based formula and consequently have lower nicotine levels than those using an e-liquid mixed with VG.

PG/VG Ratio

This is the other factor that controls how quickly you will run out of your e-liquid. PG gives your eliquid a thick, creamy consistency while adding thickness. When mixing e-liquid, you want to use as much PG as possible, because it will give your vape juice better flavor and increased vapor production (the more VG in there is typically only when thinner eliquid can be created – i.e., when using water instead of PG.)

Vaping too much liquid in your tank can also dry it out and cause it to become clogged; this would result in decreased performance. Vape pros recommend using 50-60% VG with at least 40% PG to achieve optimum results.

Water Content

The amount of water mixed with PG and VG will affect the vaping experience. Typically, water must be 30% or less to maximize vapor production, but some vapers choose to increase the level of water in their e-liquid for a smoother vape that produces more clouds.

Some manufacturers use an “8/4” formula, where 8 is the ratio of PG to VG and 4 is the ratio of 12mg nicotine per milliliter. This means you have 1/4th of a teaspoon for each milliliter (or 60 ml bottle), giving you an 8 ml vape juice and 4ml nicotine (close to 12 mg) per 0.5 mL vaped (60ml).

Some vapers prefer a “4/4” formula, where 4 are the numbers of PG and VG. This way, they get half the amount of nicotine per ml. In general, most people use the 4/4 formula because this is what most e-liquids on the market use. The only time you may see an 8/4 or a higher ratio is when there are lower levels in your e-liquid (e.g., 22mg per ml.)

Room Temperature

Many vapers enjoy vaping liquids that were chilled when originally made so they can heat them again later to maximize their life span. According to most vape experts, this can actually help your e-liquid last longer. E-liquid has a higher rate of evaporation when it’s handled at room temperature, so keeping it cool will allow you to save on refills.

Another factor that affects the life span of e-liquid is the temperature at which you vape. Vapor dissipates more quickly when air passes through your atomizer in a hotter environment; therefore, it will be depleted faster. A study conducted by Dr. Konstantinos Farsalinos shows that vaping at normal temperatures (32°C±2°C) is best for maintaining the flavor and aroma of an eliquid after you open it for use.

When you decide on a flavor, try to limit yourself to that one until you are completely through. You might want to purchase several flavors of e-liquid at once and vape a different liquid each day. This way, you can enjoy the different flavor profiles without smoking the same one for days on end.

Vaping is becoming more popular by the day, so these tips may be very useful for new vapers. Do you have any additional tips to share? Leave us a comment below to share your thoughts and insights.


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