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Restek / Rtx

Rtx

Restek™ Rtx® :GC Columns are Fused Silica columns for gas chromatography. They are available in many different stationary phase modifications and cover a broad range of applications.

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Packed Column 3% Rtx-1 Silcoport W 100 / 120 2m, 2mm, Silco, OC, Fig.7 X=10.5in, Y=7in, S=6in
RT80401-888
Packed Column 3% Rtx-1 Silcoport W 100 / 120 2m, 2mm ID, SS, Shimadzu 14A 2014
RT80401-850
Packed Column 3% Rtx-1 Silcoport 100 / 120 2m, 1 / 8in, Silco, OC, ABB
RT80401-845
Packed Column 3% Rtx-1 Silcoport W 100 / 120 2m, 2mm, Silco, PE AutoSys
RT80401-840
Packed Column 3% Rtx-1 Silcoport W 100 / 120 2m, 2mm ID PE900-3920
RT80401-830
Packed Column 3% Rtx-1 Silcoport W 100 / 120 2m, 2mm ID, SS, Varian 3800
RT80401-821
Packed Column 3% Rtx-1 Silcoport W 100 / 120 2m, 2mm, Silco, NOC, Varian
RT80401-820901
Packed Column 3% Rtx-1 Silcoport W 100 / 120 2m, 2mm ID Varian 3700
RT80401-820
Packed Column 3% Rtx-1 Silcoport W 100 / 120 2m, 2mm ID Hewlett Packard NOC
RT80401-810901
Packed Column 3% Rtx-1 Silcoport W 100 / 120 2m, 2mm ID Hewlett Packard
RT80401-810
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Technical Data

Column-Name

Phase

Polarity

USP

I.D.

Film Thickness

Tmax[1]

Rtx®-1

Dimethyl polysiloxane
(100%)

Non-Polar

G1,
G2,
G38

0.10 mm


0.18 mm


0.25 mm


0.32 mm

0.53 mm

0.10, 0.40 µm


0.20, 0.40 µm


0.10, 0.25, 0.50, 1.0 µm


0.10, 0.25, 0.50, 1.0,
1.5, 3, 4, 5 µm


0.10, 0.25, 0.50, 1.0,
1.5, 3, 5, 7 µm

240 ‒ 350 °C

Rtx®-5

Diphenyl-
/dimethylpolysiloxane
(5%/95%)

Low-Polar

G27,
G36

0.10 mm


0.18 mm


0.25 mm


0.32 mm

0.53 mm

0.10, 0.40 µm


0.20, 0.40 µm


0.10, 0.25, 0.50, 1.00 µm


0.10, 0.25, 0.50, 1.00,
1.5, 3 µm


0.10, 0.25, 0.50, 1.00,
1.5, 3, 5 µm

260 ‒ 350 °C

Rtx®-5 MS

Diphenyl-
/dimethylpolysiloxane
(5%/95%)

Low-Polar

G27,
G36

0.25 mm


0.32 mm


0.53 mm

0.10, 0.25, 0.50, 1.00 µm


0.10, 0.25, 0.50, 1.00 µm


0.50, 1.00, 1.50 µm

310 ‒350 °C

Rtx®-5 Amine

Diphenyl-
/dimethylpolysiloxane
(5%/95%)

Low-Polar

N/A

0.25 mm


0.32 mm


0.53 mm

0.25, 0.50, 1.00 µm


1.00, 1.50 µm


1.00, 3.00 µm

315 °C

Rtx®-20

Diphenyl-
/dimethylpolysiloxane
(20%/80%)

Low/Mid Polar

G28,
G32

0.25 mm


0.32 mm


0.53 mm

0.25, 0.50, 1.00 µm


0.25, 0.50, 1.00 µm


1.00 µm

320 °C

Rtx®-35

Diphenyl-
/dimethylpolysiloxane
(35%/65%)

Mid-Polar

G42

0.18 mm


0.25 mm


0.32 mm


0.53 mm

0.20, 0.40 µm


0.25, 0.50, 1.00 µm


0.25, 0.50, 1.00 µm


0.50, 1.00, 1.50, 3.00 µm

320 °C

Rtx®-35 Amine

Diphenyl-
/dimethylpolysiloxane
(35%/65%)

Mid-Polar

N/A

0.25 mm


0.32 mm


0.53 mm

0.50, 1.00 µm


1.00, 1.50 µm


1.00, 3.00 µm

220 °C

Rtx®-50

Methyl-phenylpolysiloxane
(100%)

Mid-Polar

G3

0.18 mm


0.25 mm


0.32 mm


0.53 mm

0.20, 0.40 µm


0.25, 0.50, 1.00 µm


0.25, 0.50, 1.00 µm


0.25, 0.50, 0.83, 1.00, 1.50 µm

260 ‒ 320 °C

Rtx®-65

Diphenyl-
/dimethylpolysiloxane
(65%/35%)

Mid-Polar

N/A

0.25 mm


0.32 mm


0.53 mm

0.25, 0.50, 1.00 µm


0.25, 0.50, 1.00 µm


1.00 µm

250 ‒ 300 °C

Rtx®-65TG

Diphenyl-
/dimethylpolysiloxane
(65%/35%)

Mid-Polar

N/A

0.25 mm


0.32 mm


0.53 mm

0.1 µm

370 °C

Rtx®-200

Trifluorpropyl-methylpolysiloxane
(100%)

Mid-Polar

G6

0.15 mm


0.18 mm


0.25 mm


0.32 mm


0.53 mm

0.15 µm


0.20, 0.40 µm


0.25, 0.50, 1.00 µm


0.25, 0.50, 1.00, 1.50 µm


0.25, 0.50, 1.00, 1.50, 3.00 µm

260 ‒ 340 °C

Rtx®-200 MS

Trifluorpropyl-methylpolysiloxane
(100%)

Mid-Polar

G6

0.25 mm


0.32 mm

0.10, 0.25, 0.50, 1.00 µm


0.25, 0.50, 1.00 µm

290 ‒ 340 °C

Rtx®-225

Cyanopropylmethyl-
/Phenylmethylpolysiloxane
(50% / 50%)

Polar

G7,
G19

0.25 mm


0.32 mm


0.53 mm

0.25, 0.50 µm


0.25, 0.50, 1.00 µm


0.25 µm

200 ‒ 240 °C

Rtx®-440

Proprietary

Mid-Polar

N/A

0.18 mm


0.25 mm


0.32 mm


0.53 mm

0.18 µm


0.25, 0.50 µm


0.25, 0.50 µm


0.50 µm

340 °C

Rtx®-502.2

Diphenyl-
/dimethylpolysiloxane

Mid-Polar

N/A

0.18 mm


0.25 mm


0.32 mm


0.45 mm


0.53 mm

1.0 µm


1.4 µm


1.8 µm


2.55 µm


3.0 µm

270 °C

Rtx®-624

Cyanopropylmethyl-phenylmethyl-
dimethylpolysiloxane (Equivalent to
6% Cyanopropylphenyl phases)

Low/Mid Polar

G43

0.18 mm


0.25 mm


0.32 mm


0.53 mm

1.0 µm


1.4 µm


1.8 µm


3.0 µm

240 °C

Rtx®-1614

Diphenyl-
/dimethylpolysiloxane
(5%/95%)

Non-Polar

N/A

0.25 mm

0.10 µm

360 °C

Rtx®-1701

Cyanopropylmethyl-phenylmethyl-
dimethylpolysiloxane (Equivalent to 14%
Cyanopropylphenyl phases)

Mid-Polar

G46

0.10 mm


0.18 mm


0.25 mm


0.32 mm


0.53 mm

0.10 µm


0.20, 0.40 µm


0.10, 0.25, 0.50, 1.00 µm


0.10, 0.25, 0.50, 1.00, 1.50 µm


0.25, 0.50, 1.00, 1.50, 3.00 µm

260 ‒ 280 °C

Rtx®-2330

Bis-cyanopropyl-
/cyanopropylphenylpolysiloxane
(90%/10%)

Polar

G8,
G48

0.18 mm


0.25 mm


0.32 mm

0.10 µm


0.10, 0.20 µm


0.20 µm

260 ‒ 275 °C

Rtx®-2887

Dimethyl polysiloxane
(100%)

Non-Polar

N/A

0.53 mm

2.65 µm

360 °C

Rtx®-G27

Diphenyl-
/dimethylpolysiloxane

Low-Polar

G27

0.53 mm

5.0 µm

290 °C

Rtx®-1301
(G43)

Cyanopropylphenyl
dimethylpolysiloxane

Low/Mid Polar

G43

0.25 mm


0.32 mm


0.53 mm

0.25, 0.50, 1.00, 1.40 µm


0.25, 0.50, 1.00, 1.50, 1.80 µm


0.25, 0.50, 1.00, 1.50, 3.00 µm

240 ‒ 280 °C

Rtx®-BAC Plus 1

Proprietary

Mid-Polar

N/A

0.32 mm


0.53 mm

1.8 µm


3.0 µm

260 °C

Rtx®-BAC Plus 2

Proprietary

Mid-Polar

N/A

0.32 mm


0.53 mm

0.6 µm


1.0 µm

260 °C

Rtx®-Biodiesel TG

Proprietary

Non-Polar

N/A

0.32 mm

0.1 µm

350 °C

Rtx®-DHA

100% Dimethyl polysiloxane

Non-Polar

N/A

0.20 mm


0.25 mm

0.5 µm


0.5, 1.0 µm

340 °C

Rtx®-5 DHA Tuning

Diphenyl-
/dimethylpolysiloxane
(5%/95%)

Non-Polar

N/A

0.25 mm

1.0 µm

325°C/350°C

Rtx®-Dioxin2

Proprietary

Polar

N/A

0.18 mm


0.25 mm

0.18 µm


0.25 µm

340 °C

Rtx®-Mineral Oil

Proprietary

Non-Polar

N/A

0.32 mm

0.10, 0.15, 0.30 µm

400 °C

Rtx®-PCB

Proprietary

Low-Polar

N/A

0.18 mm


0.25 mm


0.32 mm

0.18 µm


0.25 µm


0.50 µm

340 °C

Rtx®-CLPesticides

Proprietary

Low-Polar

N/A

0.18 mm


0.25 mm


0.32 mm


0.53 mm

0.18 µm


0.25 µm


0.32, 0.5 µm


0.5 µm

320°C/340°C

Rtx®-CLPesticides2

Proprietary

Low-Polar

N/A

0.18 mm


0.25 mm


0.32 mm


0.53 mm

0.14 µm


0.20 µm


0.25, 0.5 µm


0.42 µm

320°C/340°C

Rtx®-OPPesticides

Proprietary

Low-Polar

N/A

0.25 µm


0.32 mm


0.53 mm

0.25 µm


0.50 µm


0.83 µm

330 °C

Rtx®-OPPesticides2

Proprietary

Low-Polar

N/A

0.18 mm


0.25 mm


0.32 mm


0.53 mm

0.20 µm


0.25 µm


0.32 µm


0.50 µm

330 °C

Rtx®-VMS

Proprietary

Low-Polar

N/A

0.18 mm


0.25 mm


0.32 mm


0.45 mm


0.53 mm

1.0 µm


1.4 µm


1.8 µm


2.55 µm


3.0 µm

260 °C

Rtx®-VRX

Proprietary

Mid-Polar

N/A

0.18 mm


0.25 mm


0.32 mm


0.45 mm


0.53 mm

1.0 µm


1.4 µm


1.8 µm


2.55 µm


3.0 µm

260 °C

Rtx®-Volatiles

Diphenyl-
/dimethylpolysiloxane

Mid-Polar

N/A

0.25 mm


0.32 mm


0.53 mm

1.00 µm


1.50 µm


2.00 µm

280 °C

Rtx®-Volatile Amine

Proprietary

N/A

N/A

0.32 mm

N/A

290 °C

Rtx®-WAX

Polyethylene Glycol

Polar

G14, G15,
G16, G20,
G39

0.10 mm


0.25 mm


0.32 mm


0.53 mm

0.10, 0.20 µm


0.25, 0.50 µm


0.25, 0.50, 1.00 µm


0.25, 0.50, 1.00 µm

250 °C

[1] Dependent on film thickness and whether you work at constant temperature or with a gradient 

Rtx®-1:

  • General-purpose columns for solvent impurities, PCB congeners (e.g., Aroclor mixes), simulated distillation, arson accelerants, gases, natural gas odorants, sulfur compounds, essential oils, hydrocarbons, semivolatiles, pesticides, oxygenates.
  • Long lifetime and very low bleed at high operating temperatures
     

Rtx®-5:

  • General-purpose columns for drugs, solvent impurities, pesticides, hydrocarbons, PCB congeners (e.g., Aroclor mixes), essential oils, semivolatiles.
     

Rtx®-5 MS:

  • General-purpose columns for drugs, solvent impurities, pesticides, hydrocarbons, PCB congeners (e.g., Aroclor mixes), essential oils, semivolatiles.
  • Well-suited for GC/MS applications
     

Rtx®-5 Amine:

  • Application-specific column for amines and other basic compounds, including alkylamines, diamines, triamines, ethanolamines, and nitrogen-containing heterocyclics.
     

Rtx®-20:

  • General-purpose column for volatile compounds, flavor compounds, alcoholic beverages
  • Low columns-bleed
     

Rtx®-35:

  • General-purpose column for organochlorine pesticides, PCB congeners (e.g., Aroclor mixes), herbicides, pharmaceuticals, sterols, rosin acids, phthalate esters
  • Due to the increased phenyl content compared to 5% phenyl phases and the associated higher polarity, differences in the elution order are observed. Therefore, this phase is particularly suitable as a confirmation phase.
     

Rtx®-35 Amine:

  • Application-specific columns for amines and other basic compounds, including alkylamines, diamines, triamines, ethanolamines, and nitrogen-containing heterocyclics
     

Rtx®-50:

  • General-purpose columns for pesticides, herbicides, rosin acids, phthalate esters, sterols
  • Due to the high thermal stability, this column is often used as a confirmation column in double column analyses with 5% phenyl phases
     

Rtx®-65:

  • General-purpose columns for phenols, fatty acids, triglycerides
  • Highest share of phenyl of all cross-linked silicone phases. This achieves a strong interaction with aromatics
  • Very suitable as confirmation column (in combination with Rtx®-5) for EPA method 604 (phenols)
  • Similar to a Carbowax® phase, FAMEs on an Rtx®-65 elute according to their chain length. However, this phase does not show the thermal limitations of Carbowax® phases.
     

Rtx®-65TG:

  • Application-specific column, specially tested for triglycerides
  • Further applications: Phenols, Fatty acids
     

Rtx®-200:

  • General-purpose columns for solvents, Freon fluorocarbons, alcohols, ketones, silanes, glycols, and drugs of abuse
  • Excellent confirmation column with an Rtx-5 column for phenols, nitrosamines, organochlorine pesticides, chlorinated hydrocarbons, and chlorophenoxy herbicides
  • Basically for all molecules with strongly electronegative groups
  • Very good chemical and thermal stability
  • Selectivity is basically different from phenyl- or cyano groups and polyethylene glycol phases
     

Rtx®-200 MS:

  • Well-suited for GC/MS applications
  • General purpose columns for solvents, Freon fluorocarbons, alcohols, ketones, silanes, glycols
  • Excellent confirmation column with an Rtx-5 column for phenols, nitrosamines, organochlorine pesticides, chlorinated hydrocarbons, and chlorophenoxy herbicides
  • Basically for all molecules with strongly electronegative groups
  • Very good chemical and thermal stability
  • Selectivity is basically different from phenyl- or cyano groups and polyethylene glycol phases
     

Rtx®-225:

  • General-purpose columns for FAMEs, carbohydrates, sterols, flavor compounds
  • Also suitable for separation of cis/trans isomers
  • Similar polarity as Carbowax® phases, but improved thermal stability
     

Rtx®-440:

  • General-purpose columns with unique selectivity for pesticides, PAHs, or other semivolatiles
  • Ideal for low/trace-level analyses
  • Low-bleed, high-resolution columns with unique selectivity
     

Rtx®-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
     

Rtx®-624:

  • Application-specific columns for volatile organic pollutants
  • Recommended in U.S. EPA methods for volatile organic pollutants
  • Compared to the Rtx®-502.2 column, better resolution of early eluting compounds
  • Especially suitable for EPA method 524.2, as it separates 2-Nitropropane from 1,1-Dichloropropane
     

Rtx®-1614:

  • Optimized for PBDE (Poly Brominated Diphenyl Ethers) analysis by EPA Method 1614
  • Unique deactivation gives higher BDE-209 response, for greater analytical sensitivity
  • Exceeds EPA Method 1614 resolution criteria for BDE-49 and BDE-71
     

Rtx®-1701:

  • General-purpose columns for alcohols, oxygenates, PCB congeners (e.g., Aroclor mixes), pesticides, and fragrance compounds
  • Ideal for confirmation analyses in combination with a Rtx®-35 or Rtx®-5
  • Long-term reproducibility and minimal bleeding
  • Suitable for use with sensitive ECD and MSD detectors
     

Rtx®-2330:

  • Suitable for the separation of Cis/trans-Isomers of FAMEs (Fatty Acid Methyl Esters), Isomers of Dioxins and Furans
  • Special surface treatment of the FS capillary stabilizes the highly polar stationary phase. As a chemically unbound phase it therefore shows comparatively low bleeding and a better reproducibility.
     

Rtx®-2887:

  • Application-specific column for simulated distillation according to ASTM D2887
  • Optimized for flame retardant analysis by EPA Method 1614
  • High thermal stability and special deactivation
     

Rtx®-G27:

  • Application-specific columns for residual solvents in pharmaceutical products
  • Analytical column with Integra-Guard guard column eliminates connecting problems and leaks
  • Meet USP <467> requirements
     

Rtx®-1301 und Rtx®-G43:

  • Application-specific columns for residual solvents in pharmaceutical products (G43)
  • Analytical column with Integra-Guard guard column eliminates connecting problems and leaks (G43)
  • Meet all requirements of USP <467> (G43)
  • General-purpose columns for residual solvents, alcohols, oxygenates, and volatile organic compounds (1301)
     

Rtx®-BAC Plus 1 und Rtx®-BAC Plus 2:

  • Especially designed for base-line separation of blood alcohol analyses
  • Optimized column selectivities guarantee resolution of ethanol, internal standards, and frequently encountered interferences.
  • Robust and reproducible column chemistry ensures longer column lifetime and consistent results
  • Blood alcohol analysis requires dual column confirmation when using GC/FID!
     

Rtx®-Biodiesel TG:

  • Low column bleed at high temperatures
  • For glycerin and glycerides analysis, according to ASTM D6584 and EN 14105 methods
  • Linearity for all reference compounds exceeds method requirements
  • Columns with retention gaps feature Alumaseal connectors to prevent leaks and extend column life
     

Rtx®-DHA:

  • Optimized for hydrocarbon analysis
  • Columns meet or exceed all ASTM D6730-01 and CAN/CGSB 3.0 No. 14.3-99 method guidelines
  • Test report for method D6730 supplied with each column
  • Excellent responses and peak symmetry for polar oxygenates
  • The ASTM D6730 method also requires a tuning column ‒ Rtx-5® DHA Tuning Column
     

Rtx®-5 DHA Tuning:

  • Optimized for hydrocarbon analysis
     

Rtx® Dioxin2:

  • Unique selectivity for toxic dioxin and furan congeners allows use as a confirmation GC column
  • Isomer specificity for 2,3,7,8-TCDD and 2,3,7,8-TCDF achieved with one GC column
     

Rtx®-Mineral Oil:

  • Application specific columns meet DIN EN ISO 9377-2:2000 requirements
  • Optimized column dimensions for fast mineral oil screening
  • Surface linked phase guarantees long lifetime, robustness, and stability to 400 °C
  • Suitable for glycerin and glycerides analysis, according to ASTM D6584 and EN 14105 methods
     

Rtx®-PCB:

  • Unique polymer for PCBs analysis by GC-ECD or GC-MS
  • Good results for other semivolatiles.
  • Low polarity; inert to active compounds
     

Rtx®-CLPesticides und Rtx® CLPesticides2:

  • Application-specific columns for organochlorine pesticides and herbicides
  • Low bleed ‒ ideal for high sensitivity GC-ECD or GC-MS analyses
  • Analyze EPA Method 8081B, 8082A, 8151A, 504.1, 515, 508.1, and 552.2 compounds without time-consuming column changes
     

Rtx®-OPPesticides und Rtx® OPPesticides2:

  • Application-specific columns for organophosphorus pesticides
  • Best column combination for US EPA Method 8141
  • Low bleed ‒ ideal for GC-FPD, GC-NPD, or GC-MS analyses
     

Rtx®-VMS:

  • Application-specific columns for analyzing volatile organic pollutants by GC-MS including Methods TO-15, TMS, and EPA 8260
  • Complete separation of U.S. EPA Method 8260 compounds in less than 10 minutes
     

Rtx®-VRX:

  • Application-specific columns for volatile organic pollutants
  • Excellent for U.S. EPA Method 8021 compounds
     

Rtx®-Volatiles:

  • Application-specific columns for volatile organic pollutants
  • Especially developed for EPA Methods 601, 602 and 624
     

Rtx®-Volatile Amine:

  • Unique selectivity for baseline resolution of all volatile amines
  • Excellent inertness assures accuracy and sensitivity for volatile amines, including free ammonia
  • Highly robust phase withstands repeated water injections, resulting in longer column lifetime
     

Rtx®-WAX:

  • Polyethylene glycol (PEG) phase for alkenols, glycols, and aldehydes

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