Item | Premium grade | First Grade | Qualified Grade | Inspection Results |
H2SO4content ≥ | 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 |