Skip to main content


Air Liquide’s exclusive ALPHAGAZ™ pure specialty gases with guaranteed low purities for any analytical application.

Straightforward dedicated laboratory gases range

Our ALPHAGAZTM product range is our dedicated laboratory range of gases.  Available in two purities for argon, helium, hydrogen, nitrogen, oxygen and air (for CO2 , N2O , C2H2:  consult us) plus a large range of mixes.  Each cylinder is delivered with a Certificate of Conformance and guaranteed low levels of nominated impurities.  

Plus, our ALPHAGAZTM cylinders are equipped with SMARTOPTM cylinder tops.  SMARTOPTM cylinder tops have the added benefits of easy ON/OFF levers, valve protecting cap with ergonomic design for ease of handling, a built-in contents gauge and built-in Residual Pressure Valve (RPV).

Contact Us  Request a Quote  Smartop  Research and Analysis

ALPHAGAZTM meets the needs of laboratories for their applications for analysis and process control by:

  • accurate and reliable results thanks to the guaranteed low critical impurity levels,
  • 2 levels of purity corresponding to your needs:
    • ALPHAGAZTM 1, for the accuracy of analysis from % to ppm
    • ALPHAGAZTM 2, for the high accuracy of analysis ppm to ppb
    • ALPHAGAZTM 1000, is our bulk supply of ALPHAGAZTM 1
  • ALPHAGAZTM Mix:  Mix offers you the ultimate flexibility in selecting analytical accuracy and blend tolerance. Each class has unique characteristics and subsequent performance specifications. ALPHAGAZ™ Mix features high purity instrumentation and calibration gas mixtures - defined as products combining 2 to 40 components, with accuracy ranging from % to ppb. It covers a wide range of analytical needs, particularly for research, engine testing, environment and oil and gas industries.



Specifications Ar, H2, He, N2, O2

H2O  <  3ppm

H2O  <  0.5 ppm

O2  <  2 ppm*

O2  <  0.1 ppm*

CnHm  <  0.5 ppm

CO2  <  0.1 ppm


CO  <  0.1 ppm


CnHm  <  0.1 ppm


H2  <  0.1 ppm**

* except for O2  **except for H2


H2O  <  3 ppm

H2O  <  0.5 ppm

CO  <  1 ppm

CO  <  0.1 ppm

CO2  <  1 ppm

CO2  <  0.1 ppm

CnHm  <  0,1 ppm

CnHm  <  50 ppb


SO2  < 10ppb


NOx  < 10ppb

CO2 , N2O , C2H2 (consult us)


Contact Us  Request a Quote  Smartop  Research and Analysis