Purity

≥ 99.999 

Oxygen (O2)

ppmv

≤ 1.0

*GC/DID

Nitrogen (N2)

ppmv

≤ 1.5

*GC/DID

Carbon Monoxide (CO)

ppmv

≤ 1.0

*GC/DID

Carbon Dioxide (CO2)

ppmv

≤ 2.0

*GC/DID

Water (H2O)

ppmv

≤ 1.0

FT-IR

Methane (CH4)

ppmv

≤ 0.1

*GC/DID

Cadmium (Cd)

ppbw

≤ 5

**ICP-MS

Chromium (Cr)

ppbw

≤ 400

**ICP-MS

Copper (Cu)

ppbw

≤ 100

**ICP-MS

Iron (Fe)

ppbw

≤ 500

**ICP-MS

Magnesium (Mg)

ppbw

≤ 50

**ICP-MS

Sodium (Na)

ppbw

≤ 50

**ICP-MS

Nickel (Ni)

ppbw

≤ 100

**ICP-MS

Lead (Pb)

ppbw

≤ 50

**ICP-MS

Zinc (Zn)

ppbw

≤ 50

**ICP-MS

Total Metals ; ≤ 1,000 ppbw