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GC COLUMNS |
PACKED/MICROPACKED COLUMNS
Bonded Packed Columns
Bonded Stationary Phases
We combined our stationary phase synthesis experience with our unique Silcoport®
packing deactivation process to create bonded phase packings that provide longer life-
times, lower bleed, and shorter conditioning times.
Bonded methyl silicone phases (Rtx®-1 and Rtx®-5) and bonded Carbowax® phase
(Stabilwax®) are completely cross-linked on Silcoport® packing. We have evaluated
Rtx®-1 and Rtx®-5 bonded packed column phases side-by-side with nonbonded
phases of comparable polarity; the bonded phases last longer than the equivalent non-
bonded packing materials. Table I shows that retention times on an Rtx®-1 bonded
packed column are highly repeatable after only 30 minutes of conditioning.
Table I
Retention data shows the perfect reproducibility of the bonded phase
packed columns with respect to retention times.
Retention Time
Hydrocarbon
Min.
Max.
Mean
Stand. Dev.
C5
0.241
0.243
0.242
0.001
C6
0.493
0.497
0.495
0.002
C10
5.746
5.765
5.752
0.005
C20
18.482
18.491
18.486
0.004
C28
25.093
25.103
25.098
0.004
C40
32.160
32.171
32.166
0.004
C44
34.316
34.328
34.326
0.007
Bonded phase packings
decrease conditioning times
and bleed, and increase
column lifetime.
Silcosmooth® tubing has a Siltek® treated
surface, which is more inert than glass.
Who says packed columns are old technology? Not Restek!
By combining flexible SilcoSmooth® tubing with low-bleed bonded phases, we have made
the most significant improvements in packed column technology in more than 25 years!
The most complete
line of packing
materials available.
Columns available in
0.53, 0.75, 1, 2, 3.2, & 5.2mm ID.
Columns can be configured
for all GC models.
n = 9 columns
0.53 mm ID micropacked
columns now available.
See
page 132
.
NEW!
Website :
E-mail :
TelNo : 03 9762 2034 . . . in AUSTRALIA
Mar 2011
