Item
|
Specification
|
|||||
I
|
II
|
III
|
||||
Superior
|
First Grade
|
Superior
|
First Grade
|
Superior
|
First Grade
|
|
95
|
95
|
90
|
90
|
75
|
75
|
|
0.5
|
0.5
|
0.5
|
0.5
|
0.5
|
0.5
|
|
Chloride(CL),w/%≤
|
0.005
|
0.01
|
0.005
|
0.01
|
0.004
|
0.008
|
Sulfate(SO4),w/%≤
|
0.002
|
0.005
|
0.002
|
0.005
|
0.002
|
0.005
|
Nitrate and Nitrite(N),w/%≤
|
0.0005
|
0.0005
|
0.0005
|
0.0005
|
0.0005
|
0.0005
|
Phosphate (PO4),w/%≤
|
0.002
|
0.005
|
0.002
|
0.005
|
0.002
|
0.005
|
Silicate(SiO3),w/%≤
|
0.01
|
0.01
|
0.01
|
0.01
|
0.01
|
0.01
|
Iron(Fe),w/%≤
|
0.0002
|
0.0005
|
0.0002
|
0.0005
|
0.0002
|
0.0005
|
Sodium(Na),w/%≤
|
0.5
|
1.0
|
0.5
|
1.0
|
0.5
|
0.8
|
Aluminum(Al),w/%≤
|
0.001
|
0.002
|
0.001
|
0.002
|
0.001
|
0.002
|
Calcium(Ca),w/%≤
|
0.002
|
0.005
|
0.002
|
0.005
|
/
|
/
|
Nickel (Ni),w/%≤
|
0.0005
|
0.001
|
0.0005
|
0.001
|
0.0002
|
0.0005
|
Metallica (Pb),w/%≤
|
0.001
|
0.002
|
0.001
|
0.002
|
0.001
|
0.002
|