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Rtx-225 Columns (fused silica)

polar phase; Crossbond cyanopropylmethyl phenylmethyl polysiloxane
  • General-purpose columns for FAMEs, carbohydrates, sterols, flavor compounds.
  • Equivalent to USP G7, G19 phases.
Ordering Notes
Custom lengths and film thicknesses available. Contact Technical Service or your local Restek representative.

SAVE MONEY! Get six columns for the price of five. Contact Customer Service or your local Restek representative for details!
Documentation and Instructions Sheets

Rtx-225 Columns (fused silica)

Catalog #

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Catalog # Clear All
14020 15 m ea. 0.25 mm Rtx-225 0.25 µm 40 to 220/240 °C Select Deselect

Catalog # 14020

Length
15 m  
Units
ea.  
ID
0.25 mm  
Product Name
Rtx-225  
df (Film Thickness)
0.25 µm  
Temp Limits
40 to 220/240 °C  
Similar To
Agilent 122-2212
Grace 8635139
Scion/Bruker/Varian CP7705
Grace 13883
14021 15 m ea. 0.32 mm Rtx-225 0.25 µm 40 to 220/240 °C Select Deselect

Catalog # 14021

Length
15 m  
Units
ea.  
ID
0.32 mm  
Product Name
Rtx-225  
df (Film Thickness)
0.25 µm  
Temp Limits
40 to 220/240 °C  
Similar To
Agilent 123-2212
Grace 13774
Grace 8635167
Scion/Bruker/Varian CP7735
14022 15 m ea. 0.53 mm Rtx-225 0.25 µm 40 to 200/220 °C Select Deselect

Catalog # 14022

Length
15 m  
Units
ea.  
ID
0.53 mm  
Product Name
Rtx-225  
df (Film Thickness)
0.25 µm  
Temp Limits
40 to 200/220 °C  
14023 30 m ea. 0.25 mm Rtx-225 0.25 µm 40 to 220/240 °C Select Deselect

Catalog # 14023

Length
30 m  
Units
ea.  
ID
0.25 mm  
Product Name
Rtx-225  
df (Film Thickness)
0.25 µm  
Temp Limits
40 to 220/240 °C  
Similar To
Agilent 122-2232
Grace 13773
Grace 8635240
Scion/Bruker/Varian CP7715
14024 30 m ea. 0.32 mm Rtx-225 0.25 µm 40 to 220/240 °C Select Deselect

Catalog # 14024

Length
30 m  
Units
ea.  
ID
0.32 mm  
Product Name
Rtx-225  
df (Film Thickness)
0.25 µm  
Temp Limits
40 to 220/240 °C  
Similar To
Agilent 123-2232
Grace 13775
Grace 8635264
Scion/Bruker/Varian CP7745
14025 30 m ea. 0.53 mm Rtx-225 0.25 µm 40 to 200/220 °C Select Deselect

Catalog # 14025

Length
30 m  
Units
ea.  
ID
0.53 mm  
Product Name
Rtx-225  
df (Film Thickness)
0.25 µm  
Temp Limits
40 to 200/220 °C  
14026 60 m ea. 0.25 mm Rtx-225 0.25 µm 40 to 200/240 °C Select Deselect

Catalog # 14026

Length
60 m  
Units
ea.  
ID
0.25 mm  
Product Name
Rtx-225  
df (Film Thickness)
0.25 µm  
Temp Limits
40 to 200/240 °C  
14038 30 m ea. 0.25 mm Rtx-225 0.50 µm 40 to 220/240 °C Select Deselect

Catalog # 14038

Length
30 m  
Units
ea.  
ID
0.25 mm  
Product Name
Rtx-225  
df (Film Thickness)
0.50 µm  
Temp Limits
40 to 220/240 °C  
14039 30 m ea. 0.32 mm Rtx-225 0.50 µm 40 to 220/240 °C Select Deselect

Catalog # 14039

Length
30 m  
Units
ea.  
ID
0.32 mm  
Product Name
Rtx-225  
df (Film Thickness)
0.50 µm  
Temp Limits
40 to 220/240 °C  
14040 30 m ea. 0.53 mm Rtx-225 0.50 µm 40 to 200/220 °C Select Deselect

Catalog # 14040

Length
30 m  
Units
ea.  
ID
0.53 mm  
Product Name
Rtx-225  
df (Film Thickness)
0.50 µm  
Temp Limits
40 to 200/220 °C  
Similar To
Agilent 125-2237
14051 15 m ea. 0.32 mm Rtx-225 1.00 µm 40 to 200/220 °C Select Deselect

Catalog # 14051

Length
15 m  
Units
ea.  
ID
0.32 mm  
Product Name
Rtx-225  
df (Film Thickness)
1.00 µm  
Temp Limits
40 to 200/220 °C  
14052 15 m ea. 0.53 mm Rtx-225 1.00 µm 40 to 200/220 °C Select Deselect

Catalog # 14052

Length
15 m  
Units
ea.  
ID
0.53 mm  
Product Name
Rtx-225  
df (Film Thickness)
1.00 µm  
Temp Limits
40 to 200/220 °C  
Similar To
Agilent 125-2212
14054 30 m ea. 0.32 mm Rtx-225 1.00 µm 40 to 200/220 °C Select Deselect

Catalog # 14054

Length
30 m  
Units
ea.  
ID
0.32 mm  
Product Name
Rtx-225  
df (Film Thickness)
1.00 µm  
Temp Limits
40 to 200/220 °C  
14055 30 m ea. 0.53 mm Rtx-225 1.00 µm 40 to 200/220 °C Select Deselect

Catalog # 14055

Length
30 m  
Units
ea.  
ID
0.53 mm  
Product Name
Rtx-225  
df (Film Thickness)
1.00 µm  
Temp Limits
40 to 200/220 °C  
Similar To
Agilent 125-2232
14057 60 m ea. 0.32 mm Rtx-225 1.00 µm 40 to 200/220 °C Select Deselect

Catalog # 14057

Length
60 m  
Units
ea.  
ID
0.32 mm  
Product Name
Rtx-225  
df (Film Thickness)
1.00 µm  
Temp Limits
40 to 200/220 °C  

The cyanopropyl-containing Rtx-225 phase is slightly less polar than bonded polyethylene glycol (PEG) phases, but it can be used for many of the same applications.
Improvements to the Rtx-225 polymer have increased thermal stability, reduced bleed, and improved inertness. The Rtx-225 column provides a 20 °C thermal stability advantage over other "225" columns because of our unique polymer synthesis technology and proprietary siloxane deactivation. In most similar columns, the Carbowax deactivation layer is not fully compatible with the cyanopropyl siloxane polymer, which can cause adsorption, tailing of active compounds, and lower efficiency.
Similar Phases

Agilent: CP-Sil 43 CB, DB-225ms