Черный пигмент S723
Certificate of quality
| ITEMS | STANDARD | TEST RESULT |
| Fe3O4 % | ≥92 | 92.1 |
| MATTER VOLATILE AT 105℃ % | ≤1.0 | 0.73 |
| OIL ABSORPTION % | 15-25 | 20.1 |
| PH VALUE | 4-8 | 5.4 |
| RESIDUE SIFTING % | ≤0.4 | 0.33 |
| SOLUBLE MATTER IN WATER % | ≤0.5 | 0.40 |
| STRENGTH % | 95-105 | 100 |