|
Item
|
Premium grade
|
First Grade
|
Qualified Grade
|
Inspection Results
|
|
H2SO4 content ≥
|
98.0
|
98.0
|
98.0
|
98.22
|
|
Ash %≤
|
0.003
|
0.003
|
0.1
|
0.0022
|
|
Fe %≤
|
0.0001
|
0.0002
|
-
|
0.00009
|
|
As%≤
|
0.0001
|
0.005
|
-
|
0.0001
|
|
Pb%≤
|
0.005
|
0.002
|
-
|
0.005
|
|
Transparency(mm)≥
|
80
|
50
|
-
|
180
|
|
Chromaticity (ml)≤
|
2.0
|
2.0
|
-
|
Qualified
|
|
Quality Index
|
GB/T534-2002
|
|||
|
Inspection result
|
Premium grade
|
|||
