| ITEM | INDEX | ||||
| Product N ame | GL200 | GL16 | GL21 | ||
| 1 | ZnO | % | 45±1% | 28±1% | 20±1% |
| 2 | Pb | %≤ | ≤0.0040% | ≤0.05% | ≤0.0020% |
| 3 | Cd | %≤ | - | ≤0.03% | ≤0.0020% |
| 4 | Loss on Ignition | % | 25%-30% | - | 25%-30% |
| 5 | Specific Surface Area (BET) | m2/g | 30±5 | 25-30 | 30-35 |
| 6 | Residue on Sieve (75 μm ) | % ≥ | ≥95% | - | - |
| 7 | Moisture Content (105°C x 2hours) | %≤ | ≤3.0% | ≤0.7% | ≤3.0% |