95
GC COLUMNS |
APPLICATION-SPECIFIC COLUMNS
Pharmaceutical
Organic Volatile Impurities (OVI) Analysis
G16 phase
ordering note
Get the protection without the connection!
For Stabilwax® columns with built-in
Integra-Guard® guard columns, see
page 23.
Residual Solvents (Class 1) on Stabilwax® (G16)
GC_PH00951
Column
Stabilwax®, 30 m, 0.32 mm ID, 0.25 µm (cat.# 10624)
Sample
Residual solvents - class 1 (cat.# 36279)
in 20 mL headspace vial (cat.# 24685)
Diluent:
Water
Injection
Inj. Vol.:
1.0 µL headspace-syringe split (split ratio 5:1)
Liner:
2 mm splitless (cat.# 20712)
Inj. Temp.:
140 °C
Headspace-Syringe
Instrument:
Overbrook Scientific HT200H
Syringe Temp.:
100 °C
Sample Temp.:
80 °C
Sample Equil. Time: 45 min
Inj. Speed:
8
Inj. Dwell:
5 sec
Oven
Oven Temp.:
50 °C (hold 20 min) to 165 °C at 6 °C/min (hold 20 min)
Carrier Gas
He, constant flow
Flow Rate:
2.15 mL/min
Linear Velocity:
35.2 cm/sec
Detector
FID@ 250 °C
Peaks
1. 1,1-Dichloroethene
2. 1,1,1-Trichloroethane
3. Carbon tetrachloride
4. Benzene
5. 1,2-Dichloroethane
System suitability
criteria met
free literature
Custom Residual Solvent
Mixes
Download your
free copy from
lit. cat.#
PHTS1212
www.restek.comStabilwax® Columns
(fused silica)
(polar phase; Crossbond® polyethylene glycol)
• Most stable polyethylene glycol (PEG) column available.
• Rugged enough to withstand repeated water injections.
• Lowest-bleed PEG column on the market; long column lifetimes.
• Temperature range: 40 °C to 260 °C.
• Equivalent to USP G14, G15, G16, G20, and G39 phases.
Restek’s polar-deactivated surface tightly binds the Carbowax® polymer and increases
thermal stability, relative to competitive columns. Because of the increased stability
produced by the bonding process, Stabilwax® columns exhibit long column lifetimes,
even when programming repeatedly up to 260 °C. The bonding mechanism of the
column also produces polar compound retention times that do not shift, as is often
observed on other wax-type columns. In addition, this bonding mechanism produces
a column that can be rejuvenated by solvent washing.
Stabilwax® Structure
H
H
C C O
H
H
similar phases
HP-INNOWax, CP-Wax 52 CB, VF-WAX MS,
ZB-WAXplus
15-Meter
30-Meter
60-Meter
ID
df
temp. limits
cat.#
price
cat.#
price
cat.#
price
0.25 mm 0.10 µm 40 to 250/260 °C 10605
10608
10611
0.25 µm 40 to 250/260 °C 10620
10623
10626
0.50 µm 40 to 250/260 °C 10635
10638
10641
0.32 mm 0.25 µm 40 to 250/260 °C 10621
10624
10627
0.50 µm 40 to 250/260 °C 10636
10639
10642
1.00 µm 40 to 240/250 °C 10651
10654
10657
0.53 mm 0.25 µm 40 to 250/260 °C 10622
10625
10628
0.50 µm 40 to 250/260 °C 10637
10640
10643
1.00 µm 40 to 240/250 °C 10652
10655
10658
1.50 µm 40 to 230/240 °C 10666
10669
10672
2.00 µm 40 to 220/230 °C 10667
10670
10-Meter
20-Meter
ID
df
temp. limits
cat.#
price
cat.#
price
0.15 mm 0.15 µm 40 to 250/260 °C 43830
43831
0.18 mm 0.18 µm 40 to 250 °C
40602