.jpg "外观")
|
Item |
Premium quality |
Good quality |
|
Appearance |
White flake |
White flake |
|
Potassium Hydroxide (KOH) |
90% min. |
90% min. |
|
Potassium carbonate (K2CO3) |
0.5% max. |
0.5% max. |
|
Chloride (as Cl) |
0.005% max. |
0.01% max. |
|
Sulfate (as SO4) |
0.002% max. |
0.005% max. |
|
Nitrate and Nitrite (as N) |
0.0005% max. |
0.0005% max. |
|
Phosphate (PO4) |
0.002% max. |
0.005% max. |
|
Silicate (SiO3 ) |
0.01% max. |
0.01% max. |
|
Iron (Fe) |
0.0002% max. |
0.0005% max. |
|
Sodium (Na) |
0.50 % max. |
1.00 % max. |
|
Aluminum (Al) |
0.001% max. |
0.002% max. |
|
Calcium (Ca) |
0.002% max |
0.005% max |
|
Nickel (Ni) |
0.0005% max |
0.001% max |
|
Heavy Metal (as Pb) |
0.001% max |
0.002% max |
