|
Item
|
Testing result
|
|
|
KOH
|
Excellent Grade
|
First-rate Grade
|
|
95.0%
|
90.0%
|
|
|
K2CO3
|
0.5
|
0.5
|
|
Cr
|
0.005
|
0.005
|
|
Fe
|
0.0005
|
0.0005
|
|
Nitrate
|
0.005
|
0.005
|
|
Na
|
0.8
|
0.8
|
|
SiO3
|
0.01
|
0.01
|
|
Al
|
0.002
|
0.002
|
|
Ca
|
0.005
|
0.005
|
|
Ni
|
0.0005
|
0.0005
|
|
Heavy metal
|
0.002
|
0.002
|
