CLINICAL/FORENSICS
36
Capillary GC Columns
Rt-
β
DEXm™
(fused silica)
(permethylated beta cyclodextrin doped into 14% cyanopropylphenyl/86% dimethyl polysiloxane)
Uses: General purpose chiral phasewithmany published applications.
CyclodextrinColumns forAnalyzingManyChiralCompounds
By adding
β
or
γ
cyclodextrin to our bondedRtx®-1701 stationary phase, we greatly enhance overall
utility and column lifetime for our chiral columns, compared to columns that havepure cyclodextrin
stationaryphases.Separationsofmore thanonehundredchiral compoundshavebeenachievedusing
ouruniqueDEX columns, andour columns continue todemonstrate stability afterhundreds of tem-
perature program cycles. Refer to the applications sectionof this catalog for example applications, or
call ourTechnical Service chemists or yourRestek representative for assistance inmatching a column
to your chiral analysis.
ID
df (µm)
temp. limits
30-Meter
0.25mm
0.25
40 to 230°C
13100
$460
0.32mm
0.25
40 to 230°C
13101
$495
Rt-
β
DEXsm™
(fused silica)
(2,3-di-O-methyl-6-O-
tert
-butyl dimethylsilyl beta cyclodextrin doped into 14% cyanopropylphenyl/86% dimethyl polysiloxane)
Uses: Excellent column formost chiral compounds found in essential oils.
ID
df (µm)
temp. limits
30-Meter
0.25mm
0.25
40 to 230°C
13105
$620
0.32mm
0.25
40 to 230°C
13104
$655
Rt-
β
DEXse™
(fused silica)
(2,3-di-O-ethyl-6-O-
tert
-butyl dimethylsilyl beta cyclodextrin doped into 14% cyanopropylphenyl/86% dimethyl polysiloxane)
Uses: Similar in performance to Rt-
β
DEXsm™ but provides better resolution for limonene, linalool, linalyl acetate,
ethyl-2-methylbutyrate, 2,3-butane diol, and styrene oxides.
ID
df (µm)
temp. limits
30-Meter
0.25mm
0.25
40 to 230°C
13107
$620
0.32mm
0.25
40 to 230°C
13106
$655
Rt-
β
DEXsp™
(fused silica)
(2,3-di-O-propyl-6-O-
tert
-butyl dimethylsilyl beta cyclodextrin doped into 14% cyanopropylphenyl/86% dimethyl polysiloxane)
Uses: Often useful in dual-column configurations, with the Rt-
β
DEXsm™ column, for complex enantiomeric separations.
ID
df (µm)
temp. limits
30-Meter
0.25mm
0.25
40 to 230°C
13111
$620
0.32mm
0.25
40 to 230°C
13110
$655
Rt-
β
DEXsa™
(fused silica)
(2,3-di-acetoxy-6-O-
tert
-butyl dimethylsilyl beta cyclodextrin doped into 14% cyanopropylphenyl/86% dimethyl polysiloxane)
Uses: Unique selectivity for esters and lactones, and other fruit flavor components.
ID
df (µm)
temp. limits
30-Meter
0.25mm
0.25
40 to 230°C
13109
$620
0.32mm
0.25
40 to 230°C
13108
$655
Rt-
β
DEXcst™
(fused silica)
(Proprietary cyclodextrinmaterial doped into 14% cyanopropylphenyl/86% dimethyl polysiloxane)
Uses: Proprietary stationary phase, developed specifically for the fragrance industry. Also used for pharmaceutical applications.
ID
df (µm)
temp. limits
30-Meter
0.25mm
0.25
40 to 230°C
13103
$620
0.32mm
0.25
40 to 230°C
13102
$655
Rt-
γ
DEXsa™
(fused silica)
(2,3-di-acetoxy-6-O-
tert
-butyl dimethylsilyl gamma cyclodextrin doped into 14% cyanopropylphenyl/86% dimethyl polysiloxane)
Uses: Larger organicmolecules. Also useful for flavor compounds in fruit juices.
ID
df (µm)
temp. limits
30-Meter
0.25mm
0.25
40 to 230°C
13113
$620
0.32mm
0.25
40 to 230°C
13112
$655
