Restek MXT Columns
Are You Looking for the Perfect Solution for Portable, Process, and High Temperature GC Analysis?
Siltek-treated, stainless-steel MXT wall coated open tubular (WCOT) capillary columns are the best choice for high-temperature chromatography and other situations where the potential for column breakage is too high to rely on fused silica columns. For field instruments, process GCs, GCs with small ovens, etc., Restek MXT columns provide the strength of metal with the inertness of glass and are guaranteed to perform.
- Eliminate GC column breakage at high temperatures; stable up to 450°C.
- Flexible metal tubing allows custom coil diameters down to 2.5 inches, giving a perfect fit for even the smallest spaces.
- Exclusive Siltek treatment produces exceptional inertness and more accurate data.
Eliminate Column Breakage in Harsh Environments
Fused silica columns are prone to breaking at high temperatures because the polyimide coating becomes brittle with extended exposure to heat (standard rating
is 360°C). In contrast, metal MXT columns do not become brittle or break and can be used with confidence under much more aggressive conditions (up to 450°C, depending on the stationary phase). While metal surfaces can be a concern when analyzing active compounds, Restek MXT columns are Siltek treated, giving them an inertness similar to deactivated fused silica columns. The combined metal tubing and permeating Siltek treatment allow MXT columns to be coiled into extremely small diameters that are ideal for tight spaces, such as process GCs and field instruments. The standard coil diameter for most MXT columns is 4.5″,
but they can be custom coiled to meet your exact specifications (2.5–7″ coil diameters). In addition, they also offer PLOT columns with MXT tubing.
Rugged and inert, Restek’s MXT columns are available with a wide variety of polymer phases making them suitable for a broad range of applications. For example, MXT-1HT SimDist columns and MXT-Biodiesel TG columns are widely used in the petroleum/petrochemical industry based on their reliable performance with numerous ASTM methods.
Whether your analysis is being done in the field, the refinery, or the farthest reaches of the solar system, Restek's metal MXT columns are the best choice for
high-quality, reproducible data. Explore their products and resources and put the power of Restek MXT columns to work for you!
Restek MXT Columns Are Sized to Order for Your Convenience
Whether you’re using them in a process GC or a benchtop GC, Restek MXT columns will be a perfect fit. Their MXT columns come in the standard configurations given on each product web page. However, they can also be ordered in a variety of other configurations.
To order an MXT column in one of the following configurations, use the appropriate suffix from the table below.
For example, use catalog number RK71811 (MXT-1 Cap. Column, 10m, 0.18mm ID, 0.20um) and add -274 (RK71811-274) to order an MXT-1 column wound to
2.0″ ID without cage. When ordering via chromspec.com enter the base catalog number in your cart and then add the suffix under Special Instructions or request
a quote ahead of time and reference the quotation number. Don’t see what you need, or not sure about ordering? You can give us a call or email us and we can find the right MXT column product number for your application.
1-800-267-8103 or tech@chromspec.com
Please note that MXT PLOT columns are only available in the standard 7″-diameter, 11-pin cage configuration and the “-273” configuration.
All OD’s provided are estimates and can vary based on the tubing ID and column length.
| Catalog Number Suffix | MXT Coiling Description |
| -274 | 2.0″ ID without cage |
| -2740 | 2.0″ ID banded with copper wire |
| -273 | 2.75″ ID/3.5″ OD without cage (fits SRI GCs) |
| -2730 | 2.75″ ID/3.5″ OD banded with copper wire (fits SRI GCs) |
| -2731 | 2.75″ ID/3.5″ OD without cage, 18″ leads (fits SRI GCs) |
| -2732 | 2.75” ID/3.5” OD without cage, 9” leads (fits SRI GCs) |
| -283 | 3.5″ ID/4.0″ OD without cage |
| -2830 | 3.5″ ID/4.0″ OD banded with copper wire |
| -2831 | 3.5” ID/4.0” OD without cage, 18” leads (fits SRI GCs) |
| -272 | 4.5″ ID/5.0″ OD without cage |
| -2720 | 4.5″ ID/5.0″ OD banded with copper wire |
| -6850M | 5.0″ ID/5.25″ OD banded with copper wire |
| -271 | 6.0″ ID/6.5″ OD without cage |
| -2710 | 6.0″ ID/6.5″ OD banded with copper wire |
| -276 | 6.0″ ID/6.25″ OD without cage |
| -2760 | 6.0″ ID/6.25″ OD banded with copper wire |
| -277 | 7.0″ ID/7.25″ OD without cage |
| -2770 | 7.0″ ID/7.25″ OD banded with copper wire |
| -LUC18 | 0.18 mm ID MXT Column in Lucidity Column Cartridge (fits Lucidity miniGCs)* |
| -LUC25 | 0.25 mm ID MXT Column in Lucidity Column Cartridge (fits Lucidity miniGCs)* |
| -LUC53 | 0.53 mm ID MXT Column in Lucidity Column Cartridge (fits Lucidity miniGCs)* |
All MXT leads are 36″ unless otherwise noted.
*MXT columns for Lucidity miniGCs must be ≤30 m long. Each column comes factory connected in a column cartridge (additional cost will be applied).
Connect MXT Columns with Confidence
Just like Restek MXT columns, rugged MXT Low Dead Volume Connectors are Siltek treated to make them inert to active compounds. They can be used at temperatures up to 430°C without degrading the deactivated layer, and their low thermal mass tracks rapid oven temperature programming. Kits are available
for 0.28 mm, 0.32 mm, and 0.53 mm ID columns in a standard configuration for column-to-column connections and a “Y” configuration for connecting two columns
to one inlet or one column to two detectors. Rugged, inert MXT Low Dead Volume Connectors let you install MXT columns, guard columns, and transfer lines with confidence, ensuring an inert flow path that preserves analyte integrity.
Still Have Questions?
You can give us a call or email us and we can find the right Fused Silica GC Column product number for your application. It's our pleasure to help you and it's free!
1-800-267-8103 or tech@chromspec.com
