| Parameter | Specification |
| Grain Length | Short (≤5.5 mm), Medium (5.6–6.9 mm), Long (≥7.0 mm) |
| Grain Shape | Slender, Bold, Round |
| Grain Color | White, Brown, Red, Black |
| Chalkiness | ≤5% (for high-quality rice) |
| Moisture Content | 12%–14% |
| Broken Grains | ≤5% (varies by grade) |
| Foreign Matter | ≤0.5% |
| Damaged/Discolored Grains | ≤2% |
| Immature Grains | ≤1% |
| Milling Degree | Well-milled, Parboiled, Raw, Polished |
| Aroma | Aromatic (e.g., Basmati) or Non-aromatic |
| Texture | Hard or Soft (depends on variety) |
| Whiteness Index | ≥35 (varies based on polishing) |
| Red/Undehusked Grains | ≤0.5% |