What Are PG and VG?
If you're into vaping or DIY e-liquid mixing, you've probably encountered the terms PG and VG. Understanding these two base liquids is essential for creating the perfect vape experience.
Propylene Glycol (PG) is a colorless, odorless liquid that serves as one of the main carriers in e-liquids. It's known for providing a stronger throat hit similar to smoking traditional cigarettes, and it carries flavor exceptionally well. PG has a thinner consistency, making it easier to wick in most vaping devices.
Vegetable Glycerine (VG) is a thicker, slightly sweet liquid derived from vegetable oils. It's responsible for producing those big, satisfying clouds that many vapers love. VG provides a smoother, less intense throat hit compared to PG.
The PG/VG Ratio Formula
The PG/VG ratio tells you the relative proportions of these two liquids in your e-liquid mixture. The formula is straightforward:
[\text{PG/VG Ratio} = \frac{\text{Total PG Volume (ml)}}{\text{Total VG Volume (ml)}}]
This ratio helps you understand and replicate your preferred vaping characteristics.
Calculation Example
Let's work through an example to see how this works in practice.
Given:
- Total Propylene Glycol (PG): 90 ml
- Total Vegetable Glycerine (VG): 150 ml
Calculation:
[\text{PG/VG Ratio} = \frac{90}{150} = 0.60]
This means for every 1 part VG, you have 0.6 parts PG. In percentage terms, this would be roughly a 37.5% PG to 62.5% VG mix, which leans toward more vapor production with a smoother throat hit.
Interpreting Your Ratio
- Ratio = 1.0: Equal parts PG and VG (50/50 mix) - balanced throat hit and vapor
- Ratio < 1.0: More VG than PG - smoother, more vapor, less throat hit
- Ratio > 1.0: More PG than VG - stronger throat hit, better flavor, less vapor
Tips for Finding Your Perfect Ratio
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Start with 50/50: If you're new to vaping or mixing, a balanced ratio provides a good baseline experience.
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For stronger throat hit: Increase the PG proportion (higher ratio) - good for those transitioning from cigarettes.
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For bigger clouds: Increase the VG proportion (lower ratio) - ideal for sub-ohm vaping and cloud chasing.
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Consider your device: Pod systems often work better with higher PG ratios, while sub-ohm tanks handle high VG better.
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Watch for sensitivities: Some people are sensitive to PG. If you experience irritation, try higher VG ratios.