| Spezifikation | FCC VII |
| Inhalt ( Mg3 (PO4 ) 2 , entzündete Basis ) , w/% | 96,0 -101,5 |
| Arsen(As) , w/% ≤ | 0,0003 |
| Fluoride , w/% ≤ | 0,0025 |
| Blei (Pb), mg/kg ≤ | 0,0002 |
| Verlust an Iginition (425ºC ) , w/% |
30,0-37,0 (8H2O
)
20,0-27,0 (5 H2O ) 15,0-23,0 (4H2O ) |