Technical Standard:

	GB9983-88TECH			Q
Grand	High Class	FIRST	SECOND	FOOD	CP
Assay≥%	96	90	85	95	96
P2O5≥%	57	56.5	55.0	56-60	56-60
Insoluble matter%≤	0.10	0.10	0.15	0.05	0.05
F %≤				0.003
Cl(CL) %≤				0.01	0.01
SO4(SO4) %≤				0.1	0.1
PO4 %≤				PASS	PASS
Fe(Fe) %≤	0.007	0.015	0.030	0.05	0.05
Heavy metal(as Pb) %≤				0.01	0.01
PH	9.2-10	9.2-10	9.2-10	9.2-10	9.2-10
White≥%	90	80	70	85	90
As%≤				0.002	0.002
Granule 1.0mm%≤	5.0	5.0	5.0