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GC COLUMNS |
GENERAL-PURPOSE COLUMNS
Rtx®-Wax
Rtx®-Wax Columns
(fused silica)
(polar phase; Crossbond® polyethylene glycol)
• Best polyethylene glycol (PEG) phase for alkenols, glycols, and aldehydes.
• Temperature range: 20 °C to 250 °C.
• Equivalent to USP G14, G15, G16, G20, G39 phases.
Rtx®-Wax columns are the most inert and efficient PEG columns currently available.
The extended operating temperature range allows analysis of compounds having a
wide volatility range and ensures low bleed at temperatures as high as 250 °C. Selec-
tivity is comparable to other Carbowax® columns for compounds of intermediate to
high polarity.
*Maximum temperatures listed are for shorter length columns. Longer columns may have a different maximum temperature.
Time (min)
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
Cleaning Solvents on Rtx®-Wax
GC_FF00644
Column
Rtx®-Wax, 30 m, 0.32 mm ID, 0.25 µm (cat.# 12424)
Sample
1% each solvent in methanol
Injection
Inj. Vol.:
1 µL split (split ratio 100:1)
Liner:
Splitless (4 mm ID) (cat.# 20814)
Inj. Temp.:
250 °C
Oven
Oven Temp.:
35 °C (hold 4 min) to 85 °C at 3 °C/min to 200 °C at 15 °C/min (hold 2 min)
Carrier Gas
H
2
, constant flow
Flow Rate:
3 mL/min
Detector
FID@ 250 °C
Peaks
1. Methanol
2. Isopropanol
3. Ethanol
4.
n
-Propanol
5. Isobutanol
6.
n
-Butanol
7. Methyl Cellosolve®
8. Limonene
9. Cellosolve®
10. Butyl Cellosolve®
11. Dipropylene glycol monomethyl ether (DPGMME)
12. Diethylene glycol ethyl ether (DEGEE)
13. Ethylene glycol
14. Tripropylene glycol monomethyl ether (TPGMME)
15. Phenyl Cellosolve®
Rtx®-Wax Structure
H
H
C C O
H
H
similar phases
DB-Wax, CP-Wax 52 CB, ZB-Wax
15-Meter
30-Meter
60-Meter
ID
df
temp. limits*
cat.#
price
cat.#
price
cat.#
price
0.25 mm 0.25 µm 20 to 250 °C
12420
12423
12426
0.50 µm 20 to 250 °C
12435
12438
12441
0.32 mm 0.25 µm 20 to 250 °C
12424
12427
0.50 µm 20 to 250 °C
12436
12439
12442
1.00 µm 20 to 240/250 °C 12451
12454
12457
0.53 mm 0.25 µm 20 to 250 °C
12425
0.50 µm 20 to 250 °C
12440
12443
1.00 µm 20 to 240/250 °C 12452
12455
12458