Restek Corporation
(800) 356-1688 • (814) 353-1300
Figure 3
An extracted ion chromatogram shows theRtx
®
-200 column is the best column choice
to separatem/p-xylene isomers.
Call for availability of lengths greater than 1000 ft.
*Metric conversion:
6 ft. (1.8m), 25 ft. (7.6m), 50 ft. (15.2m),
200 ft. (61m), >400 ft. (>122m)
Other lengths and sizes of
Silcosteel
®
tubing
are available on a custombasis!
CoiledSilcosteel
®
Tubing
Silcosteel
®
-TreatedWelded/DrawnGrade 304
Stainless Steel Tubing
Sold by the foot—5 ft. minimum.
cat.#
ID, OD
20590
0.011" ID (0.28mm ID), 0.022"OD (0.56mmOD)
20591
0.021" ID (0.53mm ID), 0.029"OD (0.74mmOD)
20592
0.010" ID (0.25mm ID),
1
/
16
"OD (1.59mmOD)
20593
0.020" ID (0.51mm ID),
1
/
16
"OD (1.59mmOD)
20594
0.030" ID (0.76mm ID),
1
/
16
"OD (1.59mmOD)
20595
0.040" ID (1.02mm ID),
1
/
16
"OD (1.59mmOD)
0.020" wall:
20596
0.085" ID (2.16mm ID),
1
/
8
"OD (3.18mmOD)
0.020" wall:
20597
0.210" ID (5.33mm ID),
1
/
4
"OD (6.35mmOD)
Silcosteel
®
-TreatedSeamless 316Grade
Stainless Steel Tubing
Sold by the foot—5 ft. minimum.
cat.#
ID, OD
0.035" wall:
20598
0.055" ID (1.40mm ID),
1
/
8
"OD (3.18mmOD)
0.035" wall:
20599
0.180" ID (4.57mm ID),
1
/
4
"OD (6.35mmOD)
Straight Silcosteel
®
Tubing
0.085" ID
(2.16mm),
1
/
8
"OD
(3.18mm)
Length
Individual
5-Pack
18" (457mm)
20575
20576
0.210" ID
(5.33mm),
1
/
4
"OD
(6.35mm)
Length
Individual
5-Pack
18" (457mm)
20577
20578
MinimumBendRadius
(dependent onOD)
OD Min. BendRadius
£
1
/
16
"
1"
1
/
8
"
2"
1
/
4
"
4"
60m, 0.25mm ID, 1.0µmRtx-200 (cat.# 15056)
Compounds in at 10 ppb in 5mLof ROwater.
Ketones, alcohols in at 2x (unless otherwise noted).
Concentrator
:
Tekmar LSC-3100 Purge andTrap
Trap:
Vocarb 3000 (typeK)
Purge:
11min.@ 40mL/min.@ ambient
temperature
DryPurge
:
1min.@ 40mL/min.
DesorbPreheat
:
245°C
Desorb:
250°C for 2min., flow 10mL/min.
Bake
:
260°C for 8min.
Interface:
transfer line 0.53mm IDSilcosteel
MXT tubing
OvenProgram:
40°C (hold 10min.) to 100°C@
6°C/min. (hold 1min.) to 210°C
@ 30°C/min. (hold 7min.)
CarrierGas:
helium@ ~1.3mL/min. constant
flow.Adjust dichlorodifluo-
romethane to a retention time of
4.1min.@ 40°C.
Detecto
r:
Agilent 5973MS,
scan range 35 to 300AMU
Product Listing:
m-
xylene
p-
xylene
Ions 91 and 106
(peaks 65, 67, 69, Figure 1)
Ion 91
Ion 106
o-
xylene
Column product listing continued on back.
