Rtx015-16-628

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GC COLUMNS | PACKED/MICROPACKED COLUMNS
Bonded Stationary Phases
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 columns) and bonded Carbowax®
phase (Stabilwax® columns) are completely cross-linked on Silcoport® packing. We have
evaluated Rtx®-1 and Rtx®-5 bonded packed column phases side-by-side with non-
bonded phases of comparable polarity; the bonded phases last longer than the equiva-
lent nonbonded 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
n = 9 columns
Application Column Feature Benefit
ASTMMethod D3606 D3606 Application Column Set,
(Column 1: 6' (1.8 m), 1/8" OD, 2.0 mm ID, Rtx-1;
Column 2: 16' (4.9 m), 1/8" OD, 2.0 mm ID,
proprietary packing material)
Excellent separation of ethanol and
benzene.
Reliably meets method requirements.
Refinery gases 2abc Refinery Gas Column Set ,
Backflush Column
Optimized three-column set.
(Backflush column sold separately.)
Elutes C5 hydrocarbons before C1-C4
hydrocarbons for optimized resolution.
Unsaturated light hydrocarbons n-Octane on Res-Sil C Column, Unique selectivity for unsaturated
hydrocarbons.
Excellent resolution of unsaturated
light hydrocarbons gives increased data
accuracy.
cis-2-Butene and 1,3-butadiene OPN on Res-Sil C Column, Optimized selectivity for cis-2-butene
and 1,3-butadiene resolution.
Increases data accuracy.
Permanent gases Shincarbon ST Columns,
Packed or micropacked
Optimized selectivity for permanent gas
resolution without cryogenic cooling.
Preconditioned.
Increases productivity.
Low-level sulfurs Rt-XLSulfur Columns,
Packed or micropacked
Highly inert for ppbv levels of sulfur.
Eliminates need for PTFE tubing.
Increases data accuracy for low-level
sulfur analysis. Eliminates need for a
special GC setup.
For specific applications, Restek recommends using these optimized columns for better method performance.
Quick Reference Chart