A 00 capsule holds approximately 500-700 mg of powder.
A standard 00-size capsule typically holds 500-700 mg of dry powder, depending on density and fill method. Larger or denser powders may reduce capacity, while fine, fluffy powders can approach the upper limit. Always verify with a scale for precision.
Factors Affecting 00 Capsule Capacity
- Powder density: Heavy, compact powders (e.g., minerals) fill less volume than light, fluffy ones (e.g., herbal extracts).
- Tamping: Light compression can increase capacity by 10-20%, but over-packing may crack the capsule.
- Moisture content: Damp powders clump, reducing usable space and risking capsule degradation.
- Capsule material: Gelatin vs. vegetarian (HPMC) capsules have negligible volume differences but may affect flow.
Capacity Comparison by Capsule Size
| Capsule Size | Approx. Powder Capacity (mg) | Length (mm) | Best For |
|---|---|---|---|
| 000 | 800-1,000 | 26.1 | High-dose supplements, bulk fills |
| 00 | 500-700 | 23.3 | Standard supplements, moderate doses |
| 0 | 300-500 | 21.7 | Lower doses, precise measurements |
| 1 | 200-300 | 19.1 | Small doses, pediatric or potent compounds |
How to Maximize Capsule Fill Accuracy
- Use a scale: Weigh powder before filling-never rely on volume alone for critical doses.
- Test density: Fill a capsule, weigh it, then calculate mg per capsule (subtract empty capsule weight).
- Avoid overfilling: Leave 1-2 mm of space to prevent splitting during sealing.
- Use a capsule machine: Manual or automatic fillers improve consistency vs. hand-packing.
- Store properly: Keep capsules in a dry, cool place to prevent powder absorption of moisture.
Liquid vs. Powder Capacity in 00 Capsules
00 capsules can also hold liquids, but capacity differs:
- Powder: 500-700 mg (varies by density).
- Liquid (oil-based): ~0.5-0.7 mL (viscosity affects volume).
- Liquid (water-based): ~0.6-0.9 mL (may require sealing additives).
Note: Liquids require leak-proof capsules (e.g., sealed or banded) and may degrade certain capsule materials.