| Criteria | RKB Gr.1 | RKB Gr.2 | RKB Gr.3 | RKB Gr.4 |
|---|---|---|---|---|
| Foreign Matter | 0.2% Max | 0.5% Max | 1% Max | 1.5% Max |
| Contrasting Seed | 0.2% Max | 0.5% Max | 1% Max | 2% Max |
| Under Size Seed | 1.5% Max | 3% Max | 4% Max | 5% Max |
| Weevilled Seeds | 2% Max | 3% Max | 5% Max | 8% Max |
| Badly Damaged Beans | 1.5 | 3 | 4 | 5 |
| Split Seed | 2% | 3% | 5% | 8% |
| Broken | 2.5% Max | 3.5% Max | 5% Max | 8% Max |
| Moisture Content | *4% Max | *4% Max | *4% Max | *4% Max |
| Impurities | 6.2% Max | *0% Max | *5% Max | *2.5% Max |
| Purity | *3.8% | *0% | *5% | *7.5% |
