135
GC COLUMNS |
PACKED/MICROPACKED COLUMNS
Packed Column Pack ing Mater ials
Res-Sil® Packing Materials
• Unique separation of saturated and unsaturated hydrocarbons.
• Innovative bonding chemistry for batch-to-batch reproducibility, excellent thermal
stability, and long life.
• Wide range of bonded phases available.
• Equivalent to Waters Durapak packings.
Bonded silica packings with
n
-octane or cyanopropyl (OPN) functional groups yield
faster separations of C1 to C4 hydrocarbons, higher thermal stability, shorter condi-
tioning times, and longer lifetimes than conventional packings. However, bonded silica
packings have had inconsistent reproducibility and limited availability. Restek’s research
team has solved these age-old problems by developing Res-Sil® C packings for consis-
tent performance.
Unique Selectivity for Process GC and High-Speed Analysis of Petrochemicals
Res-Sil® C bonded packings are ideal for fast resolution of difficult-to-separate saturat-
ed and unsaturated C4 hydrocarbons (see page 129). This unique selectivity, when com-
bined with other columns in series, provides petroleum and petrochemical method
developers with a powerful tool for fast determination of C1 to C5 hydrocarbons.
1
Innovative Research and Stringent QA Provide Batch-to-Batch Consistency
Restek’s synthesis procedure eliminates batch-to-batch variations. The amount of
bonded liquid phase is precisely controlled in every batch, for reproducible retention
times and separations. Each production batch of Res-Sil® C packing is tested with a
complex hydrocarbon mixture to meet demanding retention time and retention index
specifications. Column bleed is also evaluated to ensure that there are no retention shifts
or high baselines.
OPN on Res-Sil® C Packing—the Latest in a Line of Bonded GC Phases
Restek offers a wide range of bonded packings for packed column GC, including
Rtx®-1, Stabilwax®, and Carbowax® phases. We have extended this technology to make
n
-octane on Res-Sil® C packing, and OPN on Res-Sil® C packing. Each of these pack-
ings has low bleed, conditioning times of less than 30 minutes, long lifetime, and
consistent batch-to-batch reproducibility.
1
N.C. Saha, S.K. Jain, and R.K. Dua. J. Chromat. Sci 1978, 323-328.
Description
Temp.
Limit (°C)
Mesh
Min.
Qty.
cat.#
price/g
Res-Sil C
300°C
60/80
10g
25400
300°C
80/100
10g
25028
Res-Sil B
300°C
60/80
10g
25401
300°C
80/100
10g
25080
1% TCEP on Res-Sil B
175°C
80/100
10g
25081
OPN on Res-Sil C
150°C
80/100
10g
25042
n
-Octane on Res-Sil C
150°C
80/100
10g
25030
2% Carbowax 1540 on Res-Sil C
150°C
80/100
10g
25044
did you
know
?
Res-Sil replaces
• Porasil B
• Porasil C
also
available
Custom packing materials are also
available. See
page 140
.
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Mar 2011
