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GC COLUMNS |
FAST GC
Fast GC
Rxi®-1ms Columns for Fast GC
(fused silica)
(nonpolar phase, Crossbond® 100% dimethyl polysiloxane)
Fast GC Using 0.10 mm and 0.15 mm ID Capillary Columns
• Significantly reduces analysis time without sacrificing resolution.
• Higher column efficiencies speed up separations.
• Ideal for GC/MS.
• Excellent for comprehensive GC (GCxGC) as second dimension column.
Narrow bore (less than or equal to 0.15 mm ID) columns are attractive alternatives to conventional-diameter capillary columns
because they provide faster analysis times and higher resolving power. As column ID decreases, column efficiency (plates/meter)
greatly increases. Therefore, resolution can be achieved with a shorter column, which decreases analysis time. In addition, narrow
bore columns are more compatible with GC/MS since typical flow rates are 1.0 mL/min. or less, eliminating the need to split the
column flow at the MS interface. Conventional methods are easily converted to narrow bore columns, but some research may be
necessary due to lower column capacities and higher back pressures.
Rxi®-5ms Columns for Fast GC
(fused silica)
(low polarity phase, Crossbond® 5% diphenyl/95% dimethyl
polysiloxane)
Rxi®-5Sil MS Columns for Fast GC
(fused silica)
(low polarity Crossbond® silarylene phase; selectivity close to 5%
diphenyl/95% dimethyl polysiloxane)
Rxi®-17 Columns for Fast GC
(fused silica)
(midpolarity phase; Crossbond® 50% diphenyl/50% dimethyl
polysiloxane)
Stabilwax® Columns for Fast GC
(fused silica)
(polar phase; Crossbond® Carbowax® polyethylene glycol)
Rt®-LC50 Columns for Fast GC
(fused silica)
(polar, dimethyl [50% liquid crystal] polysiloxane)
Rtx®-CLPesticides for Fast GC
(fused silica)
(proprietary Crossbond® phase)
Rtx®-CLPesticides2 for Fast GC
(fused silica)
(proprietary Crossbond® phase)
Operating considerations for 0.10 mm ID columns
The small degree of extra care involved in using 0.10 mm ID columns will be more than repaid by faster analyses and higher column efficiencies.
0.10 mm ID columns require higher operating pressures (>40 psig), which can result in more ferrule leaks, septum leaks, and sample flashback
through leaking syringe plungers. Connections must be monitored and leak-checked more often. Operating a 0.10 mm ID column below optimum
pressure will cause poor resolution and other poor performance. Sample capacity also is reduced, relative to wider-bore columns. Take care to not
overload the column, and make sure you inject quickly when using split injection.
tech
tip
ID
df
temp. limits
10-Meter
20-Meter
0.10mm 0.10µm -60 to 330/350°C 13301
0.15mm 0.15µm -60 to 330/350°C 43800
43801
2.0µm -60 to 330/350°C
43802
ID
df
temp. limits
10-Meter
20-Meter
0.10mm 0.10µm -60 to 330/350°C 43601
0.15mm 0.15µm -60 to 330/350°C 43815
$295
43816
2.0µm -60 to 330/350°C
43817
ID
df
temp. limits
10-Meter
20-Meter
0.10mm 0.10µm 40 to 250/260°C 42601
0.15mm 0.15µm 40 to 250/260°C 43830
43831
ID
df
temp. limits
10-Meter
0.10mm 0.10µm -60 to 330/350°C 13401
ID
df
temp. limits
10-Meter
0.10mm 0.10µm 40 to 280/320°C 13501
Rxi®-17Sil MS Columns for Fast GC
(fused silica)
(midpolarity Crossbond® silarylene phase; equivalent to 50% phenyl
methyl polysiloxane)
ID
df
temp. limits
10-Meter
20-Meter
0.15mm 0.15µm 40 to 340/360°C 43820
43821
Rtx®-200 Columns for Fast GC
(fused silica)
(midpolarity phase; Crossbond® trifluoropropylmethyl polysiloxane)
ID
df
temp. limits
10-Meter
20-Meter
0.15mm 0.15µm -20 to 320/340°C 43835
43836
ID
df
temp. limits
10-Meter
0.10mm 0.10µm 100°C to 270°C 19736
ID
df
temp. limits
10-Meter
0.10mm 0.10µm -60 to 310/330°C 43101
ID
df
temp. limits
10-Meter
20-Meter
0.10mm 0.10µm -60 to 310/330°C 43301
43302
Website : www.chromtech.net.au E-mail : info@chromtech.net.au TelNo : 03 9762 2034 . . . in AUSTRALIA
Mar 2011