Argon is considered a rare atmospheric gas which is colourless, odourless, tasteless and nontoxic. It is considered extremely inert and forms no known chemical compounds.

Argon is slightly soluble in water. The concentration of Argon in the atmosphere by volume is 0.93%.
Argon is principally shipped and used in gaseous form for neon signs, lasers, incandescent and fluorescent lamps, electronic tubes, window insulation, welding, and semiconductor applications.

Purity Specification (Maximum impurity levels) *

Contaminant	6.0 (99.9999%)	Research Grade (99.9995%)	UHP Grade (99.999%)	Volume	Valve
Carbon Dioxide (CO2)	0.1 ppm	0.5 ppm	1.0 ppm	400 Liters – 9500 Liters)	CGA 580
Carbon Monoxide (CO)	0.1 ppm	0.5 ppm	1.0 ppm			400 Liters – 9500 Liters)	CGA 580
Hydrogen (H2)	0.2 ppm	1.0 ppm	1.0 ppm			400 Liters – 9500 Liters)	CGA 580
Nitrogen (N2)	0.4 ppm	4.0 ppm	5.0 ppm			400 Liters – 9500 Liters)	CGA 580
Oxygen (02)	0.1 ppm	0.5 ppm	1.0 ppm			400 Liters – 9500 Liters)	CGA 580
Total Hydrocarbons (THC)	0.1 ppm	0.5 ppm	1.0 ppm			400 Liters – 9500 Liters)	CGA 580
Water (H20)	0.2 ppm	1.0 ppm	2.0 ppm			400 Liters – 9500 Liters)	CGA 580

Helium is a rare atmospheric gas which is colourless, odourless, tasteless, nontoxic, non-flammable and only slightly soluble in water. The concentration of Helium in the atmosphere by volume percent is 5.24 x 10-4.

Helium is principally shipped and used in either gaseous or liquid form for nuclear reactors, semiconductors, lasers, light bulbs, superconductivity, instrumentation, medical applications, cryogenics, MRI and R & D laboratory research.

Purity Specification (Maximum impurity levels) *

Contaminant	Research Grade (99.9999%)	UHP Grade (99.999%)	Volume	Valve
Argon (Ar)	0.1 ppm	3.0 ppm	25 Liters – 8500 Liters)	CGA 580
Carbon Dioxide (CO2)	0.1 ppm	1.0 ppm			25 Liters – 8500 Liters)	CGA 580
Carbon Monoxide (CO)	0.5 ppm	1.0 ppm			25 Liters – 8500 Liters)	CGA 580
Hydrogen (H2)	0.5 ppm	3.0 ppm			25 Liters – 8500 Liters)	CGA 580
Krypton (Kr)	0.1 ppm	1.0 ppm			25 Liters – 8500 Liters)	CGA 580
Neon (Ne)	0.5 ppm	3.0 ppm			25 Liters – 8500 Liters)	CGA 580
Nitrogen (N2)	0.1 ppm	3.0 ppm			25 Liters – 8500 Liters)	CGA 580
Oxygen (02)	0.1 ppm	1.0 ppm			25 Liters – 8500 Liters)	CGA 580
Total Hydrocarbons (THC)	0.1 ppm	1.0 ppm			25 Liters – 8500 Liters)	CGA 580
Water (H20)	0.2 ppm	1.0 ppm			25 Liters – 8500 Liters)	CGA 580

Nitric Oxide (NO) is a colourless toxic gas that is usually used in the diffusion process in semiconductor industry. We offer NO in a variety of purities and volume.

Contaminant	99.9 %	99.95%	99.99%	Pressure @ 21 °C	Valve
Oxygen and Argon (O2/Ar)	5 ppm	1 ppm	1 ppm	145 psig – 500 psig	CGA 660 & JIS22R
Nitrogen (N2)	200 ppm/td>	200 ppm	30 ppm
Hydrogen (H2)	5 ppm	1 ppm	1 ppm
Carbon Monoxide (CO)	50 ppm	10 ppm	1 ppm
Carbon Dioxide (CO2)	100 ppm	10 ppm	1 ppm
Nitrous Oxide (N2O)	800 ppm	100 ppm	30 ppm
Nitrogen Dioxide (NO2)	800 ppm	50 ppm	30 ppm
THC (as CH4)	10 ppm	10 ppm	1 ppm
Moisture (H2O)	10 ppm	3 ppm	1 ppm

Sulphur hexafluoride (SF6) is an inert, non toxic, heavy gas with unusual properties that make it suitable for many applications especially in the power & energy sector.

Contaminant	99.9%	99.995%	99.998%	99.999%	Pressure @ 15 °C	Valve
Air	500 ppm	-	-	-	320 psig	CGA 716
Moisture (H2O)	5 ppm	5 ppm	2 ppm	1 ppm
Oxygen and Nitrogen (O2/N2)	-	10 ppm	5 ppm	5 ppm
Carbon Tetrafluoride (CF4)	500 ppm	40 ppm	15 ppm	5 ppm
Acidity (HF)	0.3 ppm	0.5 ppm	0.5 ppm	0.1 ppm
Hydrolysable Fluoride	1 ppm	-	-	-