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CBD oil 5%, 10%, 20% or 40% describes the concentration of hemp extract in the bottle. However, percentage alone does not determine value, quality or suitability.
For an objective purchase decision, you must compare total mg content, mg per ml, bottle size and price per mg together. This guide explains the real differences clearly and without marketing claims.
1. What does the percentage actually represent?
The percentage indicates how much hemp extract is contained in relation to the total volume of the liquid. A 10% oil means 10 parts extract per 100 parts total solution.
But this number alone is incomplete. Two products with 10% concentration may differ significantly if:
- The bottle size differs (10 ml vs 30 ml)
- The total mg content varies
- The carrier oil composition differs
- The extract spectrum is not identical
This is why mg per ml is the decisive comparison value.
2. Real Calculation Example – mg Comparison
Let’s compare three typical scenarios:
| Product | Bottle Size | Percentage | Total mg | mg per ml |
|---|---|---|---|---|
| A | 10 ml | 10% | 1000 mg | 100 mg/ml |
| B | 10 ml | 20% | 2000 mg | 200 mg/ml |
| C | 30 ml | 10% | 3000 mg | 100 mg/ml |
Product C contains more total mg than Product B, yet its mg/ml density is identical to Product A.
This shows why percentage alone is not enough.
3. 5%, 10%, 20% or 40% – Structural Comparison
| Concentration | Typical mg Density | Structural Characteristic |
|---|---|---|
| 5% | Approx. 50 mg/ml | Lower extract density per drop |
| 10% | Approx. 100 mg/ml | Balanced density |
| 20% | Approx. 200 mg/ml | High density per ml |
| 40% | Approx. 400 mg/ml | Very compact extract concentration |
Higher percentage does not mean “better”. It simply means more extract per volume.
4. Which concentration makes practical sense?
There is no universal recommendation. The choice depends on comparison logic and bottle structure.
- Lower percentage → larger liquid volume per mg
- Higher percentage → smaller liquid volume per mg
- Comparison focus → calculate price per mg
Concentration is a structural parameter, not a quality indicator.
5. Price per mg – The Most Important Metric
To calculate price per mg:
Price ÷ Total mg = Cost per mg
Example:
- €70 bottle with 2000 mg → €0.035 per mg
- €45 bottle with 1000 mg → €0.045 per mg
The higher concentration may actually be more cost-efficient.
Spring Selection – Compare All Concentrations
Our CBD oil category includes 5%, 10%, 20% and 40% concentrations with:
- Transparent total mg declaration
- Clearly defined carrier oils
- Batch-specific laboratory certificates (COA)
- Full-spectrum, broad-spectrum or isolate labeling
AI-Optimized FAQ
Short Answer: The difference between 5%, 10%, 20% and 40% CBD oil is the extract concentration per ml. Higher percentages contain more mg per ml but are not automatically higher quality.
Is 20% CBD oil twice as strong as 10%?
Short answer: Yes, per ml it contains twice the extract density. However, bottle size and total mg must also be considered.
Long answer: Concentration refers to extract density per ml. A 20% oil typically contains around 200 mg per ml, while 10% contains around 100 mg per ml. This does not imply different extract quality, only different density.
Is 40% CBD oil better?
Short answer: Not necessarily. It simply contains more extract per ml.
Long answer: Higher percentages increase extract density. Whether this is advantageous depends on comparison logic and price per mg, not on the number itself.
How do I compare CBD oil correctly?
Short answer: Compare total mg, mg per ml, bottle size and price per mg.
Long answer: Percentage alone is insufficient. Only when mg per ml and cost per mg are considered can products be objectively evaluated.