Liquids & ingredients
PG/VG ratio
The PG/VG ratio states the relative proportions of propylene glycol and glycerine in an e-liquid, usually as two percentages. It affects viscosity, flavour transport, aerosol formation and feeding; the order used on the label must be checked.
01
Classification
PG/VG ratio is a measured or characteristic value, so it describes not an object but a property that can be compared. Only together with its unit, measurement condition and tolerance does the figure become genuinely meaningful. In the editorial structure of this glossary, PG/VG ratio is one of 76 entries under Liquids & ingredients, described there deliberately without any purchase recommendation.
02
Practical relevance
Product specifications often quote PG/VG ratio without context, even though context is exactly what makes the difference. Two identical numbers can mean completely different results with a different design, airflow or measuring method. The practical value of PG/VG ratio shows less at purchase than afterwards – with spare parts, warranty questions and eventual return.
03
Handling it safely
Never transfer a PG/VG ratio value from one device to another unchecked. What counts is the range printed on the part and the manufacturer's release, not figures picked up in forums. When in doubt about PG/VG ratio, take the conservative option: better to interrupt use than to accept a risk.
Note: This content is for general information and does not replace medical or legal advice.
04
Not to be confused with
Product copy often puts PG/VG ratio and Mixing ratio in the same sentence, while Viscosity describes a different level and must not be equated with them. In practice: when a source uses PG/VG ratio, first check whether it means the word technically or as marketing language.
05
Frequently asked questions
- What all falls under PG/VG ratio?
- PG/VG ratio covers every variant that fulfils the same function within Liquids & ingredients – regardless of what a manufacturer calls it in marketing.
- Can I rely on product specifications for PG/VG ratio?
- Statements about PG/VG ratio are subject to labelling requirements for the German market but vary in completeness depending on the sales channel. Imported goods are more often incomplete.
- Is PG/VG ratio the same as Liquid volume?
- No. PG/VG ratio and Liquid volume describe different aspects within Liquids & ingredients and are not interchangeable. Both entries sit side by side in this glossary so the boundary stays visible.
06
Official sources and further reading
Sources are highlighted for safety, health, disposal and legal topics. Information may change; current authority guidance and legislation prevail.