| Property | Specification |
| Appearance | Light brown to yellowish-brown dried rhizomes |
| Odor | Pungent, aromatic, and characteristic |
| Taste | Spicy, pungent, slightly bitter |
| Particle Size | 80-100 mesh (depending on the product) |
| Moisture Content | 6-8% (maximum) |
| Bulk Density | 0.4 - 0.5 g/cm³ |
| Ash Content | 5-7% (maximum) |
| Volatile Oil Content | 1-2% (minimum) |
| pH | 5.0 - 6.0 |
| Foreign Matter | Nil or not more than 1% |
| Microbial Count | Total Plate Count < 10,000 CFU/g |
| Heavy Metals | As per local regulations (commonly ≤ 2 ppm for lead) |
| Total Fiber Content | 12-18% (approx.) |
| Purity | ≥ 98% pure (typically) |