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GC COLUMNS |
GENERAL-PURPOSE COLUMNS
Rtx®-2330
Rtx®-2330 Columns
(fused silica)
(highly polar phase; biscyanopropyl cyanopropylphenyl polysiloxane)
• General-purpose columns for
cis
/
trans
FAMEs, dioxin isomers.
• Temperature range: 0 °C to 275 °C.
• Equivalent to USP G8 and G48 phase.
Rtx®-2330 is one of the most polar capillary column stationary phases. Cyano groups
on both sides of the polymer backbone give the phase a strong dipole moment and
high selectivity for
cis
/
trans
compounds or compounds with conjugated double bonds.
Highly polar columns typically exhibit poor column efficiencies, high bleed, and short
column lifetimes when thermally cycled. To overcome some of these problems, we
developed a surface treatment that is more compatible with the Rtx®-2330 phase. In
addition, our improved polymer produces columns with better column efficiency and
lower bleed.
Rtx®-2330 Structure
(CH
2
)
3
Si
C N
90%
O
(CH
2
)
3
C N
(CH
2
)
3
Si
C N
10%
O
*Maximum temperatures listed are for shorter length columns. Longer columns may have a different maximum temperature.
Similar to: (95%-cyanopropyl)-phenyl polysiloxane
tech tip
Do not solvent rinse Rtx®-2330 and
Rt®-2560 columns. These columns are
not fully bonded and solvent rinsing will
remove the stationary phase.
similar
phases
VF-23ms
FAMEs (Commercial Margarine) on Rt®-2330
GC_FF00123
Column
Rt®-2330, 105 m, 0.25 mm ID, 0.20 µm (cat.# 10729)
Sample
Commercial margarine mixture
Conc.:
Approximately 5 µg
Injection
Inj. Vol.:
1.0 µL split (split ratio 50:1)
Inj. Temp.:
275 °C
Oven
Oven Temp.:
165 °C
Carrier Gas
H
2
, constant pressure
Linear Velocity:
40 cm/sec
Detector
FID@ 275 °C
Notes
FID sensitivity: 4 x 10
-11
AFS
Peaks
1. C16:0
2. C18:0
3. C18:1
trans
4. C18:1
trans
5. C18:1
trans
6. C18:1
trans
7. C18:1
cis
8. C18:1
cis
9. C18:1
cis
10. C18:1
cis
11. C18:2
12. C20:0
(split injection)
30-Meter
60-Meter
105-Meter
ID
df
temp. limits*
cat.#
price
cat.#
price
cat.#
price
0.25 mm 0.10 µm 0 to 260/275 °C 10708
10711
10714
0.20 µm 0 to 260/275 °C 10723
10726
10729
0.32 mm 0.20 µm 0 to 260/275 °C 10724
10727
10730
0.53 mm 0.20 µm 0 to 260/275 °C 10725
10728
10-Meter
20-Meter
40-Meter
ID
df
temp. limits
cat.#
price
cat.#
price
cat.#
price
0.18 mm 0.10 µm 0 to 260 °C
40701
40702
40703