ADV06-15_1-412

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Figure 2:

To quickly determine conditions for hydrogen that

will maintain the retention times obtained when using helium,

simply match the method holdup times in the

GC® program’s

custom mode.

Figure 3:

Get the advantage of switching to hydrogen, without

having to reset retention time windows. Use the

GC® method

translator/flow calculator to establish conditions that give the

same retention times as your original method.

helium and hydrogen when switching carrier gases can be used to

some advantage with GC-MS, where hydrogen is not easily pumped

and a higher (optimum) flow would lead to a more drastic detectabil-

ity loss. In addition, confirmation of method performance is simpler as

the oven program and retention time windows do not change. This

approach should allow easier entry for labs making the switch from

helium to hydrogen carrier gas for GC.

www.restek.com/ezgc

New!

Method Translator

and Flow Calculator

Switch carrier gases, change column dimensions or detectors,

or optimize a method. View and adjust a full set of calculated

method conditions in an easy, single-screen interface.

ChromatogramModeler

Develop a method from scratch, including the column and

conditions. Just enter your analyte list to view a custom,

interactive model chromatogram with chemical structures

and mass spectra.

Take advantage of Restek’s years of chromatographic

expertise anytime, from anywhere, with the simple-to-use,

yet incredibly powerful

GC® method development suite.

Developing a new GC method? Looking to reliably

optimize an application?

Restek’s

GC® method development tools will save you hours

of calculations, guesswork, and trial and error. These free

applications are easily accessible at

www.restek.com/ezgc

—

and Windows users can download our newest component, the

GC® method translator and flow calculator, for offline use.

On a PC or Mac, desktop or tablet, our

GC® method

development tools make it easy to tailor a perfect solution for

your method development challenges.

Speed Up and Simplify GC Method Development with

Restek's EZGC

Online Suite