| El tema | Standard | |
| GB25569-2010 | FCC VII. | |
| Contenido (como NH 4 H 2 PO 4 ), w/% | 96.0-102.0 | 96.0-102.0 |
| Los fluoruros F(as),mg/kg ≤ | 10 | 10 |
| Como,mg/kg ≤ | 3 | 3 |
| Heavy metal(como Pb),mg/kg≤ | 10 | ---- |
| Plomo (Pb),mg/kg ≤ | 4 | 4 |
| PH(10g/L,25ºC) | 4.3-5.0 | ---- |