GC Capillary Column Rtx-225, 30 m, 0.32 mm ID, 0.25 µm

Rtx®-225 Columns (fused silica)

(polar phase, Crossbond® cyanopropylmethyl phenylmethyl polysiloxane)

• General-purpose columns for FAMEs, carbohydrates, sterols, flavor compounds.
• Temperature range: 40 °C to 240 °C.
• Equivalent to USP G7, G19 phases.

Similar Phase(s): DB-225ms, CP-Sil 43 CB

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.