Restek / MXT

MXT

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Restek™ MXT® GC columns are metal capillary columns for gas chromatography. The columns cover a wide range of applications and are thermally very stable.

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Technical Data

Column name

Phase

Polarity

USP

Diameter

Film thickness

Tmax[1]

MXT®-1

Dimethyl polysiloxane (100%)

Non-Polar

G1,
G2,
G38

0.18 mm


0.25 mm


0.28 mm


0.53 mm

0.20, 0.40 µm


0.10, 0.25, 0.50, 1.0 µm


0.10, 0.25, 0.50, 1.0, 3.0 µm


0.15, 0.25, 0.50, 1.0, 1.5,
3.0, 5.0, 7.0 µm

250-430 °C

MXT®-1 SimDist

Dimethyl polysiloxane (100%)

Non-Polar

N/A

0.53 mm

0.15 µm

400-430 °C

MXT®-1HT SimDist

Dimethyl polysiloxane (100%)

Non-Polar

N/A

0.53 mm

0.10, 0.20, 0.21, 0.88, 1.0, 1.2, 2.65, 5.0 µm

360-450 °C

MXT®-5

Diphenyl-
/dimethylpolysiloxane
(5%/95%)

Low-polar

G27,
G36

0.18 mm


0.25 mm


0.28 mm


0.53 mm

0.20, 0.40 µm


0.10, 0.25, 0.50, 1.0 µm


0.25, 0.50, 1.0, 3.0 µm


0.25, 0.50, 1.0, 1.5, 3.0, 5.0 µm

270-430 °C

MXT®-20

1,4-bis-(dimethylsiloxy)
phenylene-cyanopropylmethyl-dimethylpolysiloxane

Mid-polar

N/A

0.25 mm

0.25 µm

300-340 °C

MXT®-35

Diphenyl-
/dimethylpolysiloxane (35%/65%)

Mid-polar

G42

0.25 mm


0.53 mm

0.50 µm


1.0, 3.0 µm

240-340 °C

MXT®-50

Methyl-phenylpolysiloxane (100%)

Mid-Polar

G3

0.53 mm

0.83, 1.0, 1.5 µm

250-300 °C

MXT®-65

Diphenyl-
/dimethylpolysiloxane (65%/35%)

Polar

N/A

0.25 mm

0.25 µm

300 °C

MXT®-65TG

Diphenyl-
/dimethylpolysiloxane (65%/35%)

Polar

N/A

0.25 mm


0.53 mm

0.10 µm


0.10 µm

370 °C

MXT®-200

Trifluoropropyl-
methylpolysiloxane (100%)

Mid-Polar

G6

0.25 mm


0.53 mm

0.50, 1.0 µm


1.0, 1.5, 3.0 µm

260-400 °C

MXT®-500 SimDist

N/A

Non-Polar

N/A

0.53 mm

0.15 µm

420-430 °C

MXT®-502.2

Proprietary Diphenyl-
/dimethyl polysiloxane

N/A

N/A

0.28 mm


0.53 mm

1.6 µm


3.0 µm

250-320 °C

MXT®-624

Cyanopropylmethyl-phenylmethyl-dimethylpolysiloxane

Mid-Polar

N/A

0.18 mm


0.25 mm


0.53 mm

1.0 µm


1.4 µm


3.0 µm

240-280 °C

MXT®-1301

Cyanopropylphenyl-
/dimethylpolysiloxane (6%/94%)

Mid-polar

G43

0.25 mm


0.53 mm

0.25 µm


1.0, 3.0 µm

240-280 °C

MXT®-1701

Cyanopropylmethyl-
phenylmethyl-dimethylpolysiloxane

Mid-polar

N/A

0.25 mm


0.28 mm


0.53 mm

0.25, 1.0 µm


1.0, 1.5 µm


0.50, 1.0, 1.5, 3.0 µm

250-280 °C

MXT®-2887

Dimethyl polysiloxane (100%)

Non-Polar

N/A

0.53 mm

2.65 µm

360-400 °C

MXT®-WAX

Polyethylene Glycols (PEG)

Polar

G14,
G15,
G16,
G20,
G39

0.25 mm


0.28 mm


0.53 mm

0.25, 0.50 µm


0.25, 0.50, 1.0 µm


0.25, 0.50, 1.0, 1.5, 2.0 µm

220-260 °C

MXT®-Biodiesel TG

Proprietary

N/A

N/A

0.32 mm


0.53 mm

0.10 µm


0.16 µm

380-430 °C

MXT®-Volatiles

Proprietary Diphenyl/
dimethyl polysiloxane

N/A

N/A

0.25 mm


0.28 mm


0.53 mm

1.0 µm


1.25 µm


2.0, 3.0 µm

250-320 °C

MXT®-Alumina
BOND/MAPD

alumina

N/A

N/A

0.53 mm

10 µm

250 °C

MXT®-Alumina
BOND/Na2SO4
-deactivated column

alumina

N/A

N/A

0.53 mm

10 µm

200 °C

MXT® Msieve 5A

5Å Molecular sieve

N/A

N/A

0.25 mm


0.53 mm

20 µm


50 µm

300 °C

MXT® Q-Bond

N/A

N/A

N/A

0.25 mm


0.53 mm

8 µm


20 µm

280-300 °C

MXT® S-Bond

N/A

N/A

N/A

0.53 mm

20 µm

250 °C

[1 ] Depending on the film thickness and whether a constant temperature or a gradient is used

MXT®-1:

  • Non-polar, general purpose column with low bleed
  • Suitable for solvent impurities, PCB congeners (e.g., Aroclor mixes), gases, natural gas odorants, sulfur compounds, essential oils, hydrocarbons, semivolatiles, pesticides, and oxygenates
     

MXT®-1 SimDist:

  • Non-polar column for simulated distillation
     

MXT®-1HT SimDist:

  • Non-Polar column with very low bleed and long lifetime
  • Reliably meets all ASTM D2887, D6352, D7169, D7213, and D7500 specifications
     

MXT®-5:

  • Low-polar column with very low bleed and a wide application range
  • Suitable for drugs, solvent impurities, pesticides, hydrocarbons, PCB congeners (e.g., Aroclor mixes), essential oils, and semivolatiles
     

MXT®-20:

  • General-purpose, mid-polarity column for volatile compounds, flavor compounds, and alcoholic beverages
  • Low bleed
     

MXT®-35:

  • General-purpose, mid-polarity column for organochlorine pesticides, PCB congeners (e.g. Aroclor mixes), herbicides, pharmaceuticals, sterols, rosin acids, and phthalate esters
     

MXT®-50:

  • General-purpose mid-polarity column for pesticides, herbicides, rosin acids, phthalate esters, and sterols
     

MXT®-65:

  • General-purpose, mid- to high-polarity column for phenols, triglycerides, and fatty acids
     

MXT®-65TG:

  • High polarity phase specially tested for triglycerides
  • Should not be used for the analysis of compounds with active oxygen groups
     

MXT®-200:

  • General-purpose, mid-polarity column for solvents, Freon fluorocarbons, alcohols, ketones, silanes, and glycols
  • Excellent confirmation column with an Rtx-5 column, for phenols, nitrosamines, organochlorine pesticides, chlorinated hydrocarbons, and chlorophenoxy herbicides
     

MXT®-500 SimDist:

  • Non-polar column for simulated distillation
     

MXT®-502.2:

  • Application-specific column with unique selectivity for volatile organic pollutants
  • Cited in U.S. EPA Method 502.2 and in many gasoline range organics (GRO) methods for monitoring underground storage tanks
  • Excellent separation of trihalomethanes; ideal polarity for light hydrocarbons and aromatics.
     

MXT®-624:

  • Application-specific, low- to midpolarity column for volatile organic pollutants
  • Recommended in U.S. EPA methods for volatile organic pollutants
     

MXT®-1301:

  • General-purpose low- to midpolarity column for residual solvents, alcohols, oxygenates, and volatile organic compounds.
     

MXT®-1701:

  • General-purpose, mid-polarity column for alcohols, oxygenates, PCB congeners (e.g., Aroclor mixes), and pesticides
     

MXT®-2887:

  • Application-specific columns for simulated distillation according to ASTM Method D2887
     

MXT®-WAX:

  • General-purpose, polar Carbowax® column for fatty acid methyl esters (FAMEs), flavor compounds, essential oils, amines, solvents, xylene isomers, and U.S. EPA Method 603 (acrolein/acrylonitrile)
     

MXT®-Biodiesel TG:

  • Fast analysis times and sharp mono-, di-, and triglyceride peaks
     

MXT®-Volatiles:

  • Application-specific, proprietary column for volatile organic pollutants
  • Low bleed and good temperature stability; suitable for MS, PID and ECLD
     

MXT®-Alumina BOND/MAPD (PLOT column):

  • High loadability reduces peak tailing and improves separations
  • Optimized deactivation produces maximum response when analyzing trace levels of acetylene, methyl acetylene, and propadiene
  • Stable response factors make this column ideal for process-type applications where recalibration must be minimized
     

MXT®-Alumina BOND/Na2SO4 (PLOT column):

  • Can be made in small coil diameters—perfect for tight spaces
  • Rugged material withstands rough handling and shock
  • Designed for robust performance in process GCs and field instruments
  • Available in 3.5"-coil diameter or 7"-diameter, 11-pin cage
     

MXT® Msieve 5A (PLOT column):

  • Can be made in small coil diameters - perfect for tight spaces
  • Rugged material withstands rough handling and shock
  • Designed for robust performance in process GCs and field instruments
  • Available in 3.5"-coil diameter or 7"-diameter, 11-pin cage
     

MXT® Q-Bond (PLOT column):

  • Can be made in small coil diameters - perfect for tight spaces
  • Rugged material withstands rough handling and shock
  • Designed for robust performance in process GCs and field instruments
  • Available in 3.5"-coil diameter or 7"-diameter, 11-pin cage
     

MXT® S-Bond (PLOT column):

  • Can be made in small coil diameters - perfect for tight spaces
  • Rugged material withstands rough handling and shock
  • Designed for robust performance in process GCs and field instruments
  • Available in 3.5"-coil diameter or 7"-diameter, 11-pin cage
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