70/30 VG PG Ratio – What It Means for Your Vaping Experience

Definition

The 70/30 VG PG Ratio describes an e-liquid blend containing 70 % vegetable glycerine (VG) and 30 % propylene glycol (PG). This mix balances thick, flavour-muting VG with thinner, throat-hit–carrying PG, creating a smooth yet flavourful vapour ideal for cloud-chasing sub-ohm tanks and rebuildable atomisers. Beginners moving from 50/50 blends notice bigger clouds without sacrificing taste, while advanced vapers appreciate the ratio’s compatibility with high-wattage mods and modern mesh coils. The 70/30 VG PG Ratio is the most popular “high-VG” option stocked in Australian vape shops, available in Nicotine“>0mg nicotine, 3 mg, 6 mg, and nicotine-salt variants.

Technical Details

VG is a viscous, plant-derived liquid with a density of ~1.26 g ml⁻¹ and a viscosity of 1.2 Pa·s at 25 °C; PG is thinner, ~1.04 g ml⁻¹ and 0.06 Pa·s. A 70/30 mix therefore measures 70 % VG by volume (or mass when nicotine and flavouring are added), translating to 7 ml VG in every 10 ml bottle. This viscosity lowers coil wicking speed, so atomisers require 50–120 µm cotton porosity and 2.5–3 mm internal wick channels. Standard Wattage Range”>wattage range is 40–90 W on 0.15–04 Ω coils; below 30 W the liquid may not vaporise fully, above 100 W dry hits occur. Variations include 75/25, 80/20, and max-VG (90+), but 70/30 remains the sweet spot for compatibility with 510-thread sub-ohm tanks powered by single Battery“>18650 battery or dual 21700 battery mods.

Usage & Tips

  • Prime new coils: drip 3–4 drops directly onto cotton and wait 5 min before first fire to avoid dry hits.
  • Store bottles below 25 °C; VG crystallises at 18 °C, so warm between palms if liquid looks cloudy.
  • Clean tank weekly: high VG caramelises on chimney walls, muting flavour. Rinse with warm water, dry overnight.
  • Use 0mg nicotine or low-nic (3 mg) to keep Hit“>throat hit smooth; 6 mg at 70/30 can feel harsh above 60 W.
  • Check battery amp limits: a 0.2 Ω coil at 70 W draws 18.7 A—ensure your 18650 battery is rated ≥20 A continuous.

History & Context

When cloud-chasing exploded in 2013–14, vapers maxed VG for density, but wicking failed in early clearomisers. Juice makers settled on 70/30 VG PG Ratio as the first “high-VG” standard that fed consistently through Aspire Atlantis and Smok TFV4 coils. Today, the ratio dominates Australian shelves, outselling 50/50 by three to one, and is the default base for short-fill bottles under the 2021 nicotine prescription scheme.

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