Trace Impurities

Transmission Curves

ELEMENT (PPM)	GE TYPE 214 ELECTRICALLY FUSED TUBING & ROD (PPM) Maximum	GE TYPE 124 ELECTRICALLY FUSED INGOT (PPM) Maximum	HERAEUS TYPE TSC-3 FLAME FUSED INGOT (PPM)	CORNING HPFS 7980 FUSED SILICA FLAME FUSED INGOT (PPB)
Ag	—	—	—	<2
Al	19.0	19.0	15	<25
As	<0.002	<0.002	—	<15
Au	—	—	—	<1
B	<0.2	<0.2	—	<10
Ba	—	—	—	<1
Be	—	—	—	<0.5
Bi	—	—	—	<1
Ca	2.0	2.0	0.4	<15
Cd	—	—	—	<0.3
Co	—	—	—	<0.5
Cr	—	—	<0.01	<1
Cu	0.1	0.1	<0.01	<2
Fe	0.8	0.8	0.05	<20
Ga	—	—	—	<0.5
K	3.0	3.0	0.2	<5
Li	2.0	2.0	0.2	<7.2
Mg	1.0	1.0	<0.01	<5
Mn	0.24	0.24	<0.01	<1
Mo	—	—	—	<1
Na	2.5	2.5	0.3	<187
Nd	—	—	—	—
Ni	—	—	—	<5
P	—	—	—	<50
Sb	—	—	—	<0.5
Sr	—	—	—	<0.5
Th	—	—	—	<0.5
Ti	2.0	2.0	1.1	<10
U	—	—	—	<1
V	—	—	—	<1
Y	—	—	—	—
Zn	—	—	—	<5
Zr	3.0	3.5	0.8	<5
OH	Typical <5	Typical <5	170	<1000 PPM

World Leaders in the Fabrication & Distribution of Fused Quartz

Trace Impurities

Categories

TECHNICAL

Trace Impurities

ELEMENT (PPM)

GE TYPE 214 ELECTRICALLY FUSED TUBING & ROD (PPM) Maximum

GE TYPE 124 ELECTRICALLY FUSED INGOT (PPM) Maximum

HERAEUS TYPE TSC-3 FLAME FUSED INGOT (PPM)

CORNING HPFS 7980 FUSED SILICA FLAME FUSED INGOT (PPB)

Ag

Al

As

Au

B

Ba

Be

Bi

Ca

Cd

Co

Cr

Cu

Fe

Ga

K

Li

Mg

Mn

Mo

Na

Nd

Ni

P

Sb

Sr

Th

Ti

U

V

Y

Zn

Zr

OH

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World Leaders in the
Fabrication & Distribution of Fused Quartz

ELEMENT
(PPM)

GE TYPE 214 ELECTRICALLY FUSED
TUBING & ROD
(PPM) Maximum

GE TYPE 124
ELECTRICALLY FUSED
INGOT
(PPM) Maximum

HERAEUS
TYPE TSC-3
FLAME FUSED
INGOT
(PPM)

CORNING
HPFS 7980
FUSED SILICA
FLAME FUSED
INGOT
(PPB)