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www.restek.com
GC COLUMNS |
METAL (MXT®) CAPILLARY COLUMNS
Guard/Retent ion Gap Columns, Tubing Scorer
Restek Tubing Scorer for MXT® Columns
• Makes a perfect cut every time.
• Easy to use.
• Leaves column entrance perfectly round.
Metal MXT® columns are easy to cut. Scoring wafers can be used, but may leave the
column end irregularly shaped. The Restek tubing scorer is designed to make a perfect
cut every time, leaving the column entrance perfectly round.
Enlarged view—score mark flush with guide face.
score mark
guide face
Description
qty.
cat.#
price
Restek Tubing Scorer for MXT Columns (0.25-0.53mm ID & 0.5-0.8mm OD)
ea.
20523
$195
Replacement Scoring Wheel
ea.
20522
$40
Make a perfect column cut every time!
Intermediate-Polarity Deactivated MXT® Guard/Retention Gap
Columns/Transfer Lines
(passivated stainless steel)
• Useful for a wide range of applications.
• Compatible with most common solvents.
• Maximum temperature: 350 °C
Nominal ID
Nominal OD
5-Meter
5-Meter/6-pk.
10-Meter
0.28mm 0.56 ± 0.025mm 70044
70044-600
70046
0.53mm 0.74 ± 0.025mm 70045
70045-600
70047
*30- and 60-meter lengths are banded in 5-meter sections.
†Recommendation: Cut 60m guard columns into shorter lengths. Using full length may cause peak distortion.
Diameters greater than 0.10mm are tested with the Grob test mix to ensure high inertness.
Hydroguard® Treated MXT® Guard/Retention Gap Columns/Transfer Lines
(passivated stainless steel)
• Extend analytical column lifetime by preventing degradation by harsh
“steam-cleaning” water injections.
• Maximum temperature: 430 °C.
When transfer lines from purge & trap systems, air monitoring equipment, or other
instruments carry condensed water vapor, deactivated column tubing quickly becomes
active because of the creation of free silanol groups. These silanol groups adsorb active
oxygenated compounds such as alcohols and diols.
Restek chemists have addressed this concern and found a solution—the Hydroguard®
deactivation process. A unique deactivation chemistry creates a high-density surface
that is not readily attacked by aggressive hydrolysis. The high-density surface coverage
of the Hydroguard® deactivation layer effectively prevents water vapor from reaching
the fused silica surface beneath. Use Hydroguard® tubing for connecting GCs to:
• Headspace analyzers.
• Air analysis equipment and concentrator units.
Nominal ID Nominal OD
5-Meter
10-Meter
30-Meter*
60-Meter*
†
0.28mm 0.56 ± 0.025mm 70080
70083
70086
70089
0.53mm 0.74 ± 0.025mm 70081
70084
70087
70090
also
available
Column connector kits & ferrules
See page 292.
MXT® guard
column
MXT® low-dead-volume
connector
MXT® analytical
column
MXT® guard columns are tested
for inertness and bleed.
Connect MXT® columns using an
MXT® Low-Dead-Volume Connector!
Website : www.chromtech.net.au E-mail : info@chromtech.net.au TelNo : 03 9762 2034 . . . in AUSTRALIA
Mar 2011