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GC COLUMNS |
HIGH-PERFORMANCE Rxi® COLUMNS
Rxi®-1HT, Rxi®-5HT
Rxi®-1HT Columns
(fused silica)
(nonpolar phase; dimethyl polysiloxane)
• 40% longer lifetime from specially designed fused silica tubing.
• Columns processed for high-temperature applications, such as high molecular
weight hydrocarbons.
• Temperature range: -60 to 400 °C.
Rxi®-1HT Structure
CH
3
CH
3
Si
100%
O
Similar to: (100%-methyl)-polysiloxane
similar
phases
DB-1ht, ZB-1HTinferno
15-Meter
30-Meter
ID
df
temp. limits
cat.#
price
cat.#
price
0.25 mm 0.10 µm -60 to 400 °C 13950
13951
0.25 µm -60 to 400 °C
13952
0.32 mm 0.10 µm -60 to 400 °C 13953
13954
0.25 µm -60 to 400 °C
13955
Rxi®-5HT Columns
(fused silica)
(low-polarity phase; diphenyl dimethyl polysiloxane)
• 40% longer lifetime from specially designed fused silica tubing.
• Columns processed for high-temperature applications, such as mineral oil.
• Temperature range: -60 to 400 °C.
Rxi®-5HT Structure
CH
3
CH
3
Si
95%
O
Si
5%
O
Mineral Oil on Rxi®-5HT by EN9377-2 (PTV large volume injection)
GC_EV1180
Column
Rxi®-5HT, 15 m, 0.32 mm ID, 0.10 µm
(cat.# 13906)
Sample
Mineral oil
Diluent:
Hexane
Conc.:
25 ppm
Injection
Inj. Vol.:
100 µL ptv splitless
Inlet Temp. Program: 45 °C (hold 0.45 min) to 350 °C
at 200 °C/min (hold 10 min)
Oven
Oven Temp.:
35 °C (hold 4 min) to 150 °C at 60 °C/min
to 250 °C at 50 °C/min to 350 °C at
30 °C/min
Carrier Gas
He, constant flow
Flow Rate:
2 mL/min
Detector
FID@ 360 °C
Instrument
Varian 450
Acknowledgement
Ambiente Analisi S.r.L, Italy
Sample fully eluted in just 10 min
Similar to: (5%-phenyl)-methylpolysiloxane
similar
phases
DB-5ht, VF-5ht, ZB-5HTinferno
15-Meter
30-Meter
ID
df
temp. limits
cat.#
price
cat.#
price
0.25 mm 0.10 µm -60 to 400 °C 13905
13908
0.25 µm -60 to 400 °C
13923
0.32 mm 0.10 µm -60 to 400 °C 13906
13909
0.25 µm -60 to 400 °C
13924
0.53 mm 0.15 µm -60 to 380/400 °C
13910
1
2
3
4
5 6
7 8 9
10
11
12
13
14
15
16 17
5
10
15
20
25
Time (min)
~ 2 pA bleed at 400 °C
Florida TRPH Standard Mix on Rxi®-1HT
GC_PC1272
Column
Rxi®-1HT, 15 m, 0.25 mm ID, 0.10 µm
(cat.# 13950)
Sample
Florida TRPH standard (cat.# 31266)
Diluent:
Hexane
Conc.:
50 ppm (1.25 ng on-column)
Injection
Inj. Vol.:
1.0 µL split (split ratio 40:1)
Liner:
Sky® 4.0 mm ID Precision® inlet liner
w/ wool (cat.# 23305.1)
Inj. Temp.:
275 °C
Oven
Oven Temp.:
40 °C (hold 1.0 min) to 400 °C at
20 °C/min (hold 10 min)
Carrier Gas
He, constant flow
Linear Velocity:
55 cm/sec
Detector
FID@ 400 °C
Make-up Gas
Flow Rate:
45 mL/min
Make-up Gas
Type:
N
2
Hydrogen flow:
40 mL/min
Air flow:
450 mL/min
Data Rate:
50 Hz
Instrument
Agilent/HP6890 GC
Peaks
t
R
(min)
1.
n
-Octane
1.24
2.
n
-Decane
2.71
3.
n
-Dodecane
4.19
4.
n
-Tetradecane
5.49
5.
n
-Hexadecane
6.64
6.
n
-Octadecane
7.68
7.
n
-Eicosane
8.63
8.
n
-Docosane
9.50
9.
n
-Tetracosane
10.30
10.
n
-Hexacosane
11.04
11.
n
-Octacosane
11.73
12.
n
-Triacontane
12.38
13.
n
-Dotriacontane 12.98
14.
n
-Tetratriacontane 13.55
15.
n
-Hexatriacontane 14.09
16.
n
-Octatriacontane 14.60
17.
n
-Tetracontane
15.08