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GC COLUMNS | GENERAL-PURPOSE COLUMNS
Fast GC
How to Get the Same ChromatogramWith a
Fast GC Column
For over 20 years, 0.15 mm ID columns have
been proven to work in virtually any applica-
tion field. When switching to a smaller-ID and
shorter-length column, there are several things
you must do in order for your new, faster
method to give you the same chromatogram
(i.e., separations) as your old method:
1) Choose a column with the same
phase ratio.
2) Adapt the temperature program
so that the analyte elution
temperatures are the same.
3) Adjust the linear velocity. (For a
good starting point, see your
column’s certificate of analysis.)
Following these guidelines will help ensure
that you achieve similar chromatography (i.e.,
identical elution order and resolution)— in a
fraction of the time.
Rxi®-1ms Columns for Fast GC (fused silica)
(nonpolar phase; Crossbond® dimethyl polysiloxane)
Shorten Analysis Time and Boost Productivity
With Restek Fast GC Columns
Fast GC 0.15 mm ID Columns
• Increase productivity up to 2x without sacrificing resolution.
• Compatible with your existing GC setup.
• Low bleed for maximum sensitivity and accurate GC-MS analyses.
• Thick films (up to 2 μm) eliminate loadability issues.
• OD similar to 0.25 mm columns for easy installation.
• Excellent as secondary columns for GCxGC.
• Available in a variety of stationary phases.
The math is simple: the less time it takes to perform each analysis, the more samples
your laboratory can process. The easiest way to reduce analysis time while still main-
taining resolution of critical compounds is to use hydrogen as your carrier gas. If hy-
drogen is not an option, or if you already use it and want to go even faster, turn to the
higher resolving power of smaller-bore capillary columns from Restek.
As column ID decreases, column efficiency (i.e., plates/meter) increases, allowing you
to achieve the same, or even better, resolution using a shorter length—and signifi-
cantly less time. Whether you are currently using 0.25 or 0.53 mm ID columns, you
can shorten analysis times as much as twofold by switching to Restek® 0.15 mm ID fast
GC columns. These high-efficiency columns speed up separations on your existing GC
or GC-MS instrumentation—while maintaining resolution and meeting method crite-
ria—so you can make more runs per shift with the same exceptional accuracy you’ve
come to expect from Restek.
Rxi®-5Sil MS Columns for Fast GC (fused silica)
(low-polarity phase; Crossbond® 1,4-bis(dimethylsiloxy)phenylene dimethyl polysiloxane)
Rxi®-17Sil MS Columns for Fast GC (fused silica)
(midpolarity Crossbond® phase)
Rtx®-200 Columns for Fast GC (fused silica)
(midpolarity phase; Crossbond® trifluoropropylmethyl polysiloxane)
Stabilwax® Columns for Fast GC (fused silica)
(polar phase; Crossbond® polyethylene glycol)
tech tip
Use a 20 m fast GC column in place of a
standard 30 m column; a 10 m in place of
a 15 m; and a 40 m in place of a 60 m.
10-Meter 20-Meter
ID df temp. limits cat.# price cat.# price
0.15 mm 0.15 µm -60 to 330/350 °C 43800 43801
10-Meter 20-Meter
ID df temp. limits cat.# price cat.# price
0.15 mm 0.15 µm -60 to 320/350 °C 43815 43816
2.0 µm -60 to 320/350 °C 43817
10-Meter 20-Meter
ID df temp. limits cat.# price cat.# price
0.15 mm 0.15 µm 40 to 340/360 °C 43820 43821
10-Meter 20-Meter
ID df temp. limits cat.# price cat.# price
0.15 mm 0.15 µm -20 to 320/340 °C 43835 43836
10-Meter 20-Meter
ID df temp. limits cat.# price cat.# price
0.15 mm 0.15 µm 40 to 250/260 °C 43830 43831