Vape Juice Guide: PG/VG Ratios, Nicotine Levels & Choosing the Right E-Liquid 

Quick Answer

The right vape juice depends on three main factors: PG/VG ratio, nicotine strength and device type. A 50/50 blend is commonly suited to lower powered pod and mouth to lung devices while higher VG blends such as 70VG/30PG are commonly used with higher output direct to lung setups. Nicotine strength must also match the device because higher output devices deliver more aerosol per puff.

Choosing vape juice can feel more complicated than choosing a flavour. Two bottles may sound equally appealing yet perform very differently in the same device. One may feel too strong. Another may wick too slowly. A third may produce exactly the balance the user wants.

This vape juice guide explains PG/VG ratios in plain language. It also explains nicotine concentration and device compatibility. Readers can use these factors together instead of choosing e-liquid based on flavour alone.

TL;DR

• PG is thinner and tends to create a more noticeable throat sensation.

• VG is thicker and generally produces denser visible aerosol.

• 50/50 liquids are commonly paired with lower powered pod and MTL systems.

• 70VG/30PG is a common starting ratio for higher powered direct to lung devices.

• Nicotine strength is usually shown in mg/mL or as a percentage.

• Device output can affect how much nicotine is delivered.

• Flavour matters but device compatibility should come first.

• Nicotine is addictive and vaping aerosol is not simply harmless water vapour.

Why Trust This Vape Juice Guide?

This guide combines published research with practical product information and device guidance. Scientific studies have found that PG/VG ratio can influence aerosol characteristics and nicotine delivery. Device power and nicotine formulation also affect the final experience.

The product examples also draw on information published by Vape Junction and established vape manufacturers. That creates a more useful connection between the chemistry on an e-liquid label and the way real products are designed to be used. 

What Is Vape Juice?

Direct answer: Vape juice is the liquid heated by an electronic vaping device to create an inhalable aerosol. Most e-liquids contain propylene glycol or PG and vegetable glycerine or VG. They can also contain flavouring and nicotine depending on the product.

PG and VG form the base of most e-liquids. Changing the proportion of these ingredients changes properties such as viscosity and aerosol production. Research also indicates that changing the PG/VG ratio can influence nicotine delivery.

That is why the ratio printed on a bottle deserves as much attention as the flavour name.

What Does PG Mean in Vape Juice?

Direct answer: PG stands for propylene glycol. It has a lower viscosity than VG and is commonly associated with thinner e-liquid and a more noticeable throat sensation. Higher PG formulations also tend to produce less visible aerosol than high VG blends.

The thinner consistency can make PG rich liquids easier for smaller wicking systems to absorb. This is one reason balanced formulations are commonly used in compact pod systems and mouth to lung devices. Device manufacturers commonly recommend 50/50 blends for this category.

What Does High PG Vape Juice Feel Like?

Compared with a high VG liquid a PG heavy blend generally provides:

• A more pronounced throat sensation

• Less dense visible aerosol

• Thinner liquid consistency

• Faster movement through smaller wicking channels

• A different flavour presentation depending on the formulation and device

PG aerosol can cause throat or eye irritation in some people. Published toxicology reviews also note that evidence around long term inhalation exposure remains more limited than evidence concerning oral exposure.

What Does VG Mean in Vape Juice?

Direct answer: VG stands for vegetable glycerine. VG is more viscous than PG and has physical properties that contribute to denser aerosol formation. High VG vape juice is therefore commonly paired with larger coils and higher output devices.

VG creates a different physical experience because the liquid is thicker. A small pod with narrow wicking channels may struggle with very thick e-liquid while larger coils are generally designed to handle it more effectively.

What Does High VG Vape Juice Feel Like?

A high VG blend is generally associated with:

• Denser visible aerosol

• A milder throat sensation

• A thicker liquid consistency

• Better suitability for larger wicking ports

• Common use in direct to lung and higher output setups

A 70VG/30PG formulation has become a common reference point for sub ohm and direct to lung e-liquid. Innokin describes 70VG/30PG as a common industry starting ratio for this vaping style.

Did You Know?

PG/VG ratio does more than change cloud density. Research has found that changing the ratio can also affect nicotine delivery and puff behaviour. This means two liquids with the same stated nicotine concentration can feel different when their formulation or device setup changes.

PG/VG Ratio Explained

A PG/VG ratio tells the user how much of each base ingredient is present. A bottle marked 50VG/50PG contains an equal proportion of the two base components. A bottle marked 70VG/30PG contains more vegetable glycerine than propylene glycol.

There is no single ratio that suits every vape device. The most useful choice depends on coil design and power output.

- 50VG/50PG

A 50/50 e-liquid offers a balanced viscosity. Manufacturers frequently recommend this ratio for compact mouth to lung pod systems because thinner liquid can move through smaller wicking channels more easily.

It can be a practical choice for:

• MTL pod kits

• Lower output devices

• Smaller coils

• Users seeking moderate aerosol production

- 60VG/40PG

A 60VG/40PG mixture sits between traditional balanced liquid and high VG juice.

This ratio can suit some restricted direct to lung systems and more powerful pod devices. Compatibility still depends on the coil because not every pod handles thicker liquid in the same way. Vaporesso notes that some RDL setups work well around the 60/40 to 70/30 range.

- 70VG/30PG

A 70VG/30PG ratio is one of the most widely used high VG formats for direct to lung vaping. It provides thicker consistency and greater visible aerosol while remaining practical for many large coil systems.

It is commonly associated with:

• Sub ohm tanks

• DTL devices

• Larger coils

• Wider wicking ports

• Higher power settings

- 80VG/20PG and Higher

Very high VG e-liquid is thicker again. It generally requires hardware that can keep the wick adequately supplied with liquid.

Using extremely thick vape juice in a coil designed for thinner liquid can interfere with wicking. Device manufacturers specifically warn that some pod systems perform poorly with 70% VG or higher because their wicking systems are designed around thinner blends.

Which PG/VG Ratio Matches Each Device?

Direct answer: Lower powered pod and mouth to lung devices generally work best with thinner liquids such as 50VG/50PG. Restricted direct to lung systems may support 60VG/40PG or 70VG/30PG. Larger direct to lung and sub ohm systems commonly use 70VG/30PG or another high VG formulation.

These are starting points rather than universal settings. The coil manufacturer's recommended liquid type remains important because wicking design varies between devices. 

What Do Vape Juice Nicotine Levels Mean?

Direct answer: Nicotine strength describes the concentration of nicotine in e-liquid. It is commonly displayed in milligrams per millilitre or mg/mL. It may also appear as a percentage.

For example:

• 0 mg/mL = nicotine free

• 3 mg/mL = 0.3%

• 6 mg/mL = 0.6%

• 10 mg/mL = 1%

• 20 mg/mL = 2%

The number describes concentration. It does not tell the user exactly how much nicotine will enter the body from each puff.

Actual nicotine delivery can vary according to device power and puff duration. PG/VG ratio and nicotine formulation can also affect delivery.

What Nicotine Strength Should a User Choose?

Nicotine strength should be considered together with device output rather than in isolation.

Higher output setups create considerably more aerosol than small MTL devices. This is one reason lower nicotine concentrations are generally paired with direct to lung and sub ohm vaping. Device manufacturers recommend low nicotine liquids for higher output setups.

Smaller mouth to lung systems create less aerosol per draw. They are therefore commonly used with formulations designed specifically for that vaping style.

Anyone who does not currently use nicotine has no reason to begin using a nicotine containing product. Nicotine is addictive and can cause adverse effects.

Freebase Nicotine vs Nicotine Salts

Freebase nicotine and nicotine salts are two different nicotine formulations found in e-liquid.

Freebase nicotine is commonly found in traditional bottled vape juice and is frequently used at lower concentrations in larger devices.

Nicotine salts alter how nicotine is formulated and can allow higher nicotine concentrations to be inhaled with less perceived harshness than comparable freebase formulations. The CDC notes that nicotine salt products can facilitate consumption of high nicotine levels without the same degree of harshness associated with freebase nicotine.

This difference makes the device especially important. A nicotine concentration intended for a small pod should not automatically be treated as interchangeable with a low concentration liquid designed for a higher output setup.

A Simple Vape Juice Decision Tree

A user can narrow the options with four questions.

1. What Device Is Being Used?

Start with the coil rather than the flavour.

A compact MTL pod usually points toward thinner e-liquid. A large DTL tank usually points toward higher VG vape juice.

2. What Ratio Does the Coil Handle?

Check the device or coil guidance.

If the device is built around 50/50 liquid then an 80VG blend may be too thick. If the device uses large sub ohm coils then a high PG liquid may not provide the experience the hardware was designed to create.

3. Is Nicotine Required?

Nicotine free e-liquid is available.

If nicotine is used then the concentration needs to make sense for the output of the device. The same stated strength can deliver a different experience across different hardware because aerosol output and nicotine delivery are affected by multiple variables.

4. Which Flavour Profile Sounds Appealing?

Only after compatibility is clear does flavour become the deciding factor.

Fruit profiles can feel bright and fresh. Beverage flavours can recreate familiar drinks. Dessert blends can lean toward cream or bakery notes. Menthol profiles introduce a cooling sensation.

This sequence keeps the decision simple:

Device → PG/VG ratio → nicotine level → flavour

Vape Juice Brand Examples at Vape Junction

Understanding the label becomes easier when looking at real products.

1. Vapour Mountain

A Vape Junction listing for Classic Cola by Vapour Mountain shows a 120ml format with a listed nicotine strength of 2mg. It is a useful example of why shoppers need to read the full specification instead of assuming every large bottle is 0mg or 3mg.

2. 8 Ball Liquids

The Vape Junction collection for 8 Ball Liquids includes flavour concepts built around tropical fruit ice blends and beverage profiles such as blackcurrant grape soda and peach iced tea. The collection demonstrates how flavour families can help shoppers narrow a large e-liquid catalogue after device compatibility has already been established.

3. Ruthless / Pretzel Shack by Ruthless

For users drawn toward bakery inspired flavours Ruthless / Pretzel Shack by Ruthless provides a different flavour direction. Vape Junction identifies Pretzel Shack with cinnamon pretzel and yogurt dessert profiles while the Ruthless wholesale catalogue describes both cinnamon coated and yogurt dunked variations.

4. Yami Vapor

Dessert and fruit combinations are also represented by Yami Vapor. Vape Junction lists examples such as Taruto with an egg tart style custard profile and Bad Karma with mango cream and raspberry. Several listed 100ml products carry a 3mg nicotine specification.

5. Milk Lab

A particularly useful PG/VG example comes from Milk Lab. Vape Junction lists Milk Lab Drippity as a 75VG/25PG 50ml liquid with 0mg nicotine. That specification shows how a shopper can identify both viscosity and nicotine concentration before deciding whether a liquid matches the intended setup.

Why Vape Juice Can Feel Different Even at the Same Nicotine Strength

Two bottles marked 3mg do not necessarily create an identical experience.

Nicotine delivery depends partly on the chemistry and partly on the hardware. Research has found that PG/VG ratio can affect nicotine delivery. Battery power and nicotine formulation also influence the amount and form of nicotine in the aerosol.

Puff duration and vaping behaviour introduce further variation.

This is why changing devices can make an existing vape juice suddenly feel different even when nothing on the bottle has changed.

Expert Insight

Treat nicotine concentration and device power as connected settings. Looking only at the mg number leaves out the volume of aerosol the device produces and the way the liquid formulation behaves.

Common Vape Juice Choosing Mistakes

1. Choosing Only by Flavour

A flavour can sound perfect and still be poorly matched to the coil.

Check viscosity first.

2. Assuming More VG Is Always Better

Higher VG is useful when the device is designed for it. Very thick vape juice can be unsuitable for compact pod systems with small wicking channels.

3. Ignoring Device Output When Choosing Nicotine

Higher power generally means more aerosol.

This makes nicotine concentration especially important when moving between MTL and DTL hardware.

4. Treating Aerosol as Harmless Water Vapour

E-cigarette aerosol is not simply water vapour. Public health sources report that aerosol can contain nicotine and other potentially harmful substances. Long term health effects continue to be studied.

5. Assuming Every Coil Handles Every Liquid

Coil resistance alone does not tell the entire story.

Wicking ports and recommended power range also matter. The safest practical approach is to use the liquid type recommended for the specific device or coil.

Key Takeaways

A good vape juice choice starts with compatibility rather than flavour.

• PG is thinner and gives a more noticeable throat sensation.

• VG is thicker and produces denser visible aerosol.

• 50/50 liquid is commonly suited to lower powered MTL systems.

• 70VG/30PG is widely used in larger DTL and sub ohm systems.

• Nicotine concentration is measured in mg/mL or percentage.

• The same nicotine strength can feel different across devices.

• Higher output setups are generally paired with lower nicotine concentrations.

• Flavour is best selected after ratio and nicotine requirements are understood.

• Product labels offer useful clues about bottle size and nicotine concentration.

• Vape aerosol is not harmless water vapour.

Conclusion: Choose Vape Juice by Device First

The easiest way to choose vape juice is to stop treating every bottle as interchangeable.

Start with the device. Identify the coil and suitable PG/VG range. Then select an appropriate nicotine concentration. Flavour can come last.

That process removes much of the guesswork.

Vape Junction offers e-liquids across different flavour families and formats for users with different setups. Browse the available vape juice range or speak with the Vape Junction team when a device and liquid combination needs a closer look. The Vape Junction website also states that guidance is available for customers choosing devices and nicotine strengths.

Frequently Asked Questions

Q1. What is the best PG/VG ratio for vape juice?

There is no single best PG/VG ratio. A 50VG/50PG blend is commonly suited to smaller mouth to lung pod devices. A 70VG/30PG blend is widely used with direct to lung and sub ohm devices. The correct choice depends on the coil and its wicking design.

Q2. Is 70VG/30PG better than 50VG/50PG?

Neither ratio is automatically better. A 70VG/30PG liquid is thicker and commonly used for denser aerosol in larger devices. A 50VG/50PG liquid is thinner and usually works better in compact MTL pod systems. The device determines which formulation is more suitable.

Q3. What does 3mg nicotine mean in vape juice?

A 3mg label normally means the e-liquid contains 3 milligrams of nicotine per millilitre. This equals a concentration of 0.3%. The number indicates liquid concentration rather than the exact amount absorbed during each puff because nicotine delivery also depends on device output and vaping behaviour.

Q4. Can high VG vape juice be used in a pod system?

It depends on the pod. Many compact MTL pods are designed around 50VG/50PG liquid and may not wick very thick high VG formulations effectively. Some more powerful pod systems can handle thicker blends. Checking the recommended liquid ratio for the specific pod or coil is the best approach.

Q5. Does more VG mean bigger clouds?

Higher VG formulations generally produce denser visible aerosol than higher PG formulations. VG has greater viscosity and different physical properties that affect aerosol formation. Actual aerosol production still depends on coil design and device power as well as airflow and puff behaviour.

Q6. Does a higher PG ratio give more flavour?

Higher PG liquid is often associated with sharper flavour delivery and a stronger throat sensation. However flavour intensity also depends on the flavour formulation and device. Coil type and power can change how the same e-liquid tastes. PG/VG ratio is therefore one factor rather than the only factor.

Q7. Why does the same nicotine strength feel stronger in another device?

Device output can change the amount of aerosol generated per puff. Research also shows that PG/VG ratio and nicotine formulation can influence nicotine delivery. A 3mg liquid used in a high output device can therefore create a different experience from a 3mg liquid used in a smaller device.

Q8. Can vape juice contain no nicotine?

Yes. Some e-liquids are sold at 0mg nicotine concentration. Vape Junction product listings include nicotine free examples such as a 0mg 75VG/25PG Milk Lab liquid. A 0mg label indicates that the product is presented as nicotine free rather than simply having a low nicotine concentration.

About the Author

Vape Junction brings years of hands on experience helping customers understand vape devices and e-liquid choices. Its product range covers pod systems and advanced hardware alongside local and international e-liquids. Vape Junction states that it operates 21 retail stores across South Africa and provides product guidance for both newer and experienced users. The team focuses on making device compatibility and product specifications easier to understand. Readers can explore more educational guides from Vape Junction or browse the latest product categories for further information.