| Appearance |
Deep red to maroon color, dry, with intact petals and calyx |
| Shape |
Petals are irregular and slightly wrinkled, with a tubular calyx |
| Size |
2 to 5 cm (length of flower petals) |
| Odor |
Characteristic floral, slightly tart aroma |
| Taste |
Tart, slightly astringent, sour |
| Moisture Content |
8% to 12% |
| Bulk Density |
0.2 to 0.3 g/cm³ |
| Foreign Matter |
Not more than 1% |
| Ash Content |
4% to 7% |
| Pesticide Residue |
Must conform to international standards |
| Storage |
Store in a cool, dry place away from direct sunlight |
| Shelf Life |
12 to 24 months when stored properly |
| Particle Size |
Less than 1 cm for ground hibiscus |
