|
Item
|
Specification
|
|
H2SO4 % ≥
|
93 or 98
|
|
SO3 % ≥
|
--
|
|
Ash % ≤
|
0.02
|
|
Fe % ≤
|
0.005
|
|
As % ≤
|
0.0001
|
|
Hg % ≤
|
0.001
|
|
Pb % ≤
|
0.005
|
|
Transparency /mm ≥
|
80
|
|
Colour /ml ≤
|
2.0
|
