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ELEMENT
(PPM) 		ELECTRICALLY FUSED
TUBING & ROD
(PPM) 		ELECTRICALLY FUSED
INGOT
(PPM) 		FLAME FUSED
INGOT
(PPM) 		FUSED SILICA
FLAME FUSED
(PPB)
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
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