| Percent Weight | ||||
| Component | B3 | B3-Ag | B3-Ga | B3-I |
| B2O3 | 53% | 52% | 52% | 53% |
| CaO | 20% | 20% | 20% | 20% |
| K2O | 12% | 12% | 12% | 10% |
| Na2O | 6% | 6% | 6% | 6% |
| MgO | 5% | 5% | 5% | 5% |
| P2O5 | 4% | 4% | 4% | 4% |
| Ag2O | - | 1% | - | - |
| Ga2O3 | - | - | 1% | - |
| I | - | - | - | 2% |