Pure Gases

ALPHAGAZ™ Pure Gases

Choosing the right gas products for a particular analytical instrument and application can be confusing. Air Liquide has simplified gas selection by reducing the complex and confusing matrix of available gas grades down to two levels of purity as represented in our ALPHAGAZ™ product line. Instead of focusing on the total purity of the specialty pure gas, we set limits on the critical impurities that affect the performance of the instrument and application used.

Three Grades, Two Purity Ranges

An Air Liquide research and development team surveyed major analytical instrument manufacturers to determine the recommended gas purity for their instrumentation. Studies were then conducted on many of these instruments to determine the effect of varying levels of impurities on their performance. Our findings indicated that two basic ranges for gas purity are necessary to ensure optimal performance of analytical instruments in most applications.

ALPHAGAZ™ 2: The Highest Purity Level Possible

ALPHAGAZ™ 2 products exhibit the absolute lowest impurity levels available in the industry, making them the best choice for laboratory, analytic and process control applications where uncompromised ultra-high-purity is needed.

ALPHAGAZ™ 1: One Convenient Grade for Many Applications

ALPHAGAZ™ 1 products exceed purity recommendations of most laboratory instrument manufacturers, making them an obvious choice for all-around use in the laboratory. Because they provide guaranteed low impurity levels, ALPHAGAZ™ 1 pures are ideal for most analytic and process control applications, including petrochemical, secondary electronics and optoelectronics as well as scientific research and many other applications.

ALPHAGAZ™ 1000: Cryogenic Solutions

ALPHAGAZ™ 1000 provides the same specifications as ALPHAGAZ™ 1, but is offered for those applications requiring cryogenic liquid argon, nitrogen and helium. Since large volumes of gaseous nitrogen or argon are needed for ICP and FTIR instruments, cryogenic supplies can be better suited than cylinders of compressed gas to fill this need. Liquid helium is often used to cool magnets in instruments such as NMR spectrophotometers.