ID
df
temp. limits
30-Meter
50-Meter
0.25mm 4µm
to 200°C
19776
0.32mm 5.00µm
to 200°C
19761
19762
0.53mm 10µm
to 200°C
19759
19760
108 www.restek.com
did you
know
?
Rt®-Alumina BOND columns show unique
retention characteristics for hydrocarbons.
Traces of water in the carrier gas and in the
sample will affect the retention and the
selectivity of alumina. If exposed to water, the
retention times will shorten. The column can
be regenerated by conditioning for 15-30 min.
at 200 °C under normal carrier gas flow.
Periodic conditioning ensures excellent
run-to-run retention time reproducibility.
The maximum programmable temperature
for an Rt®-Alumina BOND column is 200 °C.
Higher temperatures cause irreversible
changes to the porous layer adsorption
properties.
advanced
technology
Details on
pages 106-107
.
tech
tip
for
more
info
For more information on
Rt®-Alumina BOND/CFC columns, see page 74.
Rt®-Alumina BOND/Na
2
SO
4
Columns
(fused silica PLOT)
(Na
2
SO
4
deactivation)
• Acetylene/propadiene elute after butanes (impurities in acetylene/propadiene).
• Best separation for butene isomers (impurities in butene streams).
• Methyl acetylene elutes after 1,3-butadiene.
• Cyclopropane (impurity in propylene) elutes well before propylene.
1. Highly selective for C1-C5 hydrocarbons; separates all unsaturated hydrocarbon
isomers above ambient temperatures.
2. Reactivity of aluminum oxide stationary phase is minimized so that column
response for polar unsaturates, such as dienes, is optimized. Column sensitivity or
response ensures a linear and quantitative chromatographic analysis for these
compounds.
3. Strong bonding prevents particle generation. The column can be used in valve
switching operations, without release of particles that can harm the injection and
detection systems.
4. The Rt®-Alumina BOND column is stable up to 200 °C. If water is adsorbed on
the column, it can be regenerated by conditioning at 200 °C. Full efficiency and
selectivity will be restored.
5. High capacity and loadability give exceptionally symmetric peaks; ideal for volatile
hydrocarbon separations at percent levels, as well as impurity analyses at ppm
concentrations.
Guaranteed Reproducibility
Each Rt®-Alumina BOND column is tested with a hydrocarbon test mix to ensur
proper phase thickness and selectivity. 1,3-Butadiene is used to calculate k (capacity fac
tor), which is a measure of phase thickness. Selectivity is measured using retentio
indices for propadiene and methyl acetylene. The resolution of
trans
-2-butene an
1-butene is also verified. To measure coating efficiency, plates per meter are checke
using 1,3-butadiene. Extensive testing assures reproducible retention times an
predictable flow behavior column-to-column.
Rt®-Alumina BOND/KCl Columns
(fused silica PLOT)
(KCl deactivation)
• Acetylene elutes before C4 hydrocarbons (impurities in butane/isobutane).
• Methyl acetylene (impurity in 1,3-butadiene) elutes before 1,3-butadiene.
MXT®-Alumina BOND/Na
2
SO
4
Columns
(Siltek®-treated stainless steel PLOT)
Advantages of metal MXT® PLOT columns include:
• Can be made in small coil diameters—perfect for tight spaces.
• Will not spontaneously break, making them ideal for rugged environments.
• Designed for robust performance in process GCs and field instruments.
3.5" coil
7" diameter 11-pin cage
ID
df (µm)
temp. limits
30-Meter
30-Meter
0.53mm 10µm
to 200°C
79714-273
79714
now
available
!
Metal MXT® PLOT Columns
NEW!
Rt®-Alumina BOND/CFC Columns
(fused silica PLOT)
• Improved inertness for halogenated compounds such as CFCs.
• Highly selective alumina based column, separates most CFCs.
• High retention and capacity for CFCs.
NEW!
ID
df
temp. limits
30-Meter
0.53mm 10µm
to 200°C
19763
ID
df
temp. limits
30-Meter
50-Meter
0.25mm 4µm
to 200°C
19775
0.32mm 5.00µm
to 200°C
19757
19758
0.53mm 10µm
to 200°C
19755
19756
NEW!
NEW!
Website : www.chromtech.net.au E-mail : info@chromtech.net.au TelNo : 03 9762 2034 . . . in AUSTRALIA Mar