Rtx015-16-628

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GC COLUMNS | APPLICATION-SPECIFIC COLUMNS
Specially Deactivated
Rt®-γDEXsa Columns (fused silica)
(2,3-di-acetoxy-6-O-tert-butyl dimethylsilyl gamma cyclodextrin added
into 14% cyanopropylphenyl/86% dimethyl polysiloxane)
Uses: Larger organic molecules. Also useful for flavor compounds in fruit juices.
Cyclodextrin Columns for Analyzing Many Chiral Compounds
By adding β or γ cyclodextrin to our bonded Rtx®-1701 stationary phase, we greatly enhance overall utility and column lifetime for
our chiral columns, compared to columns that have pure cyclodextrin stationary phases. Separations of more than one hundred
chiral compounds have been achieved using our unique DEX columns, and our columns continue to demonstrate stability after
hundreds of temperature program cycles.
Rt®-βDEXm Columns (fused silica)
(permethylated beta cyclodextrin added into 14% cyanopropylphenyl/
86% dimethyl polysiloxane)
Uses: General-purpose chiral phase with many published applications.
Rt®- βDEXsm Columns (fused silica)
(2,3-di-O-methyl-6-O-tert-butyl dimethylsilyl beta cyclodextrin added
into 14% cyanopropylphenyl/86% dimethyl polysiloxane)
Uses: Excellent column for most chiral compounds in essential oils.
Rt®-βDEXse Columns (fused silica)
(2,3-di-O-ethyl-6-O-tert -butyl dimethylsilyl beta cyclodextrin added into
14% cyanopropylphenyl/86% dimethyl polysiloxane)
Uses: Similar in performance to Rt-βDEXsm but provides better resolution for limonene,
linalool, linalyl acetate, ethyl-2-methylbutyrate, 2,3-butane diol, and styrene oxides.
Rt®-βDEXsp Columns (fused silica)
(2,3-di-O-propyl-6-O-tert-butyl dimethylsilyl beta cyclodextrin added
into 14% cyanopropylphenyl/86% dimethyl polysiloxane)
Uses: Often useful in dual-column configurations, with the Rt-βDEXsm column, for
complex enantiomeric separations.
Rt®-βDEXsa Columns (fused silica)
(2,3-di-acetoxy-6-O- tert-butyl dimethylsilyl beta cyclodextrin added into
14% cyanopropylphenyl/86% dimethyl polysiloxane)
Uses: Unique selectivity for esters, lactones, and other fruit flavor components.
Rt®-βDEXcst Columns (fused silica)
(Proprietary cyclodextrin material added into 14% cyanopropylphenyl/
86% dimethyl polysiloxane)
Uses: Proprietary stationary phase, developed specifically for the fragrance industry. Also
used for pharmaceutical applications.
Chiral Analysis
Lower elution temperatures significantly
improve chiral selectivity.
This can be achieved the following ways:
• Faster linear velocities (80 cm/sec) with
hydrogen carrier gas.
• Slower temperature ramp rates (1–2 °C/min).
• Appropriate minimum operating
temperature (40 or 60 °C).
• On-column concentrations of 50 ng or less.
tech tip
Download your free copies from
Grape Flavor Analysis,
Using an Rt®-γDEXsa
GC Column
lit. cat.#
59553
free literature
GC Analysis of Chiral Flavor
Compounds in Apple Juices,
Using Rt®-βDEXsm and
Rt®-βDEXse
Columns
lit. cat.#
59546
30-Meter
ID df temp. limits cat.# price
0.25 mm 0.25 µm 40 to 230 °C 13113
0.32 mm 0.25 µm 40 to 230 °C 13112
30-Meter
ID df temp. limits cat.# price
0.25 mm 0.25 µm 40 to 230 °C 13100
0.32 mm 0.25 µm 40 to 230 °C 13101
30-Meter
ID df temp. limits cat.# price
0.25 mm 0.25 µm 40 to 230 °C 13105
0.32 mm 0.25 µm 40 to 230 °C 13104
30-Meter
ID df temp. limits cat.# price
0.25 mm 0.25 µm 40 to 230 °C 13107
0.32 mm 0.25 µm 40 to 230 °C 13106
30-Meter
ID df temp. limits cat.# price
0.25 mm 0.25 µm 40 to 230 °C 13111
0.32 mm 0.25 µm 40 to 230 °C 13110
30-Meter
ID df temp. limits cat.# price
0.25 mm 0.25 µm 40 to 230 °C 13109
0.32 mm 0.25 µm 40 to 230 °C 13108
30-Meter
ID df temp. limits cat.# price
0.25 mm 0.25 µm 40 to 230 °C 13103
0.32 mm 0.25 µm 40 to 230 °C 13102