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 INDUSTRIAL GASES

ARGON ( Ar ) 

Physical Properties
Molecular weight 39.948 kgjkmol
Critical temperature - 122.3 °C
Critical pressure 48.9 bar
Boiling point at 1.013 bar - 185.9 °C
Gas density at 1.013 bar 1.691 kgjm3
Relative gas density to air = 1 1.379
Compressibility at 1.013 bar 0.999

Cylinder Data
Colour body peacock blue
Valve right hand - conforming to IS 3224
Water capacity 47 / 50 ltrs. (standard)
Note : Please enquire for other cylinder sizes. Customer cylinder refilling also undertaken.
Gas Specifications
Grade Maximum Level of Critical Impurities (PPMBY Volume)
  02 H2O THC N2 CO+ CO2
VCL SPL. 1.0 1.0 0.5 3 ND
VCL I 2.0 2.0 0.5 5 ND
VCL II 4.0 4.0 1.0 10 0.5
Some typical applications
*  Carrier gas in gas chromatography
*  Filling of lamps with Nitrogen / Neon /  Krypton
*  Shielding gas for welding (pure or mixed)
*  Inductive coupled plasma (ICP)
*  Shielding atmosphere for molten metals
*  Stainless steel refining
*  In excimer lasers with Helium or Neon

ZERO AIR 

Physical Properties
 
Molecular weight 28.951 kgfkmol
Critical temperature - 140.7 °C
Critical pressure 37.7 bar
Boiling point at 1.013 bar - 194.5 °C
Gas density at 1.013 ba 1.226 kg / m3
Relative gas density to air = 1 1.000
Compressibility at 1.013 bar 0.999

Cylinder Data
Colour body - french grey
Valve right hand - conforming to IS 3224
Water capacity 47 / 50 ltrs. (standard)
Note : Please enquirefor other cylinder sizes. Customercylinder refilling also undertaken.

 Gas Specifications

Grade Maximum Level of Critical Impurities (PPMBY Volume)
  H2O

THC

CO + CO2
VCL I 2.0 0.5 ND
VCL II 4.0 1.0 0.5
Some typical applications :
*  Synthetic Air is used as the oxidizer for flame gas in gas chromatography and total 
   hydrocarbon analysers . 
*  Zero gas in analytical instruments

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