TABLE OF CONTENTS - BGB Analytik AG

GC and GC/MS
228
Columns for GC/MS
Tips & Tools
Agilent MS Certified Liners
are lot-tested with MSD
and FID for superior acid/base
deactivation, response linearity
and peak symmetry.
Turn to page 153.
Columns for GC/MS
There is a rapidly increasing population of benchtop GC/MS instruments in analytical
laboratories that analyze a broadening range of trace level, higher temperature samples.
These samples require increasingly inert, lower bleed, higher temperature columns. In
response to this growing need, Agilent Technologies deliberately designed several "ms"
columns to chromatograph a broader range of low level samples and generate lower bleed
even at higher temperatures.
What makes an Agilent J&W low bleed column unique?
Unique polymer chemistry and proprietary surface deactivation, both of which have
contributed to columns that adhere to the tightest quality control specifications in the industry
for bleed, inertness, selectivity and efficiency. Agilent J&W "ms" columns utilize special
surface deactivation and siloxane chemistries which enhance the chromatographic
performance of siloxane polymers.
While some of the GC/MS phases utilize different polymer chemistries, their selectivity mimics
the standard polysiloxane phases and offers the advantages of low column bleed and, in some
cases, extended temperature ranges.
The mass spectrum of septum bleed can look very much like GC column bleed, so the two are
often confused. An easy way to tell the two apart: column bleed will be a rise in the baseline,
not peaks. If you see bleed peaks, these generally come from lower quality septa or septa
being used beyond their operating limits. To minimize septa contributions to background bleed
use quality Agilent BTO, Long Life, or Advanced Green septa.
www.agilent.com/chem/supplies