| Le point | Standard | |
| GB25569-2010 | VII DE LA FCC | |
| Content(sous forme de NH 4 H 2 PO 4 ), w/% | 96.0-102.0 | 96.0-102.0 |
| Les fluorures(F),mg/kg ≤ | 10 | 10 |
| Comme l',mg/kg ≤ | 3 | 3 |
| Heavy metal(comme Pb),mg/kg≤ | 10 | ---- |
| Le plomb (Pb),mg/kg ≤ | 4 | 4 |
| PH(10g/L,25ºC) | 4.3-5.0 | ---- |