TRACE IMPURITIES
|
ELECTRICALLY FUSED |
ELECTRICALLY FUSED |
FLAME FUSED |
FUSED SILICA |
|
Ag |
— | — | — | <2 | |
Al |
14 | 14 | 15 | <25 | |
As |
<.002 | <.002 | — | <15 | |
Au |
— | — | — | <1 | |
B |
<0.2 | <0.2 | — | <10 | |
Ba |
— | — | — | <1 | |
Be |
— | — | — | <0.5 | |
Bi |
— | — | — | <0 | |
Ca |
0.4 | 0.4 | 0.5 | <15 | |
Cd |
<0.01 | <0.01 | — | <0.3 | |
Co |
— | — | — | <0.5 | |
Cr |
<0.05 | 0.05 | <0.01 | <1 | |
Cu |
<0.05 | <0.05 | <0.01 | <2 | |
Fe |
0.2 | 0.2 | 0.1 | <20 | |
Ga |
— | — | — | <0.5 | |
K |
0.6 | 0.6 | 0.2 | <5 | |
Li |
0.6 | 0.6 | 0.2 | <7.2 | |
Mg |
0.1 | 0.1 | — | <5 | |
Mn |
<0.05 | <0.05 | 0.01 | <1 | |
Mo |
— | — | — | <1 | |
Na |
0.7 | 0.7 | 0.1 | <187 | |
Nd |
— | — | 0.1 | — | |
Ni |
<0.1 | <0.1 | — | <5 | |
P |
<0.2 | <0.2 | — | <50 | |
Sb |
<0.003 | <0.003 | — | <0.5 | |
Sr |
— | — | — | <0.5 | |
Th |
— | — | — | <0.5 | |
Ti |
1.1 | 1.1 | 1.3 | <10 | |
U |
— | — | — | <1 | |
V |
— | — | — | <1 | |
Y |
— | — | <0.1 | — | |
Zn |
— | — | — | <5 | |
Zr |
0.8 | 0.8 | 1.3 | <5 | |
OH |
<5 | <5 | 170 | <1000 PPM | |
