# 50 % Cyanopropylmethyl - 50 % Phenylmethylpolysiloxane — GC column stationary phase cross-reference by manufacturer

For 50 % Cyanopropylmethyl - 50 % Phenylmethylpolysiloxane, usp g-code(s) is G7, G19; agilent equivalents is DB-225, CP Sil 43 CB; restek equivalents is Rtx-225; sge/trajan equivalents is BP225; macherey-nagel equivalents is Optima-225, verified against its source on 2026-08-15.

- **Phase chemistry:** 50 % Cyanopropylmethyl - 50 % Phenylmethylpolysiloxane _(verified: appears in the quote below)_
- **USP G-code(s):** G7, G19 _(verified: appears in the quote below)_
- **Agilent equivalents:** DB-225, CP Sil 43 CB _(verified: appears in the quote below)_
- **Restek equivalents:** Rtx-225 _(verified: appears in the quote below)_
- **SGE/Trajan equivalents:** BP225 _(verified: appears in the quote below)_
- **Macherey-Nagel equivalents:** Optima-225 _(verified: appears in the quote below)_

## What the source says

> InertCap 225 G7, G19 50 % Cyanopropylmethyl - 50 % Phenylmethylpolysiloxane DB-225, CP Sil 43 CB Rtx-225 BP225 007-225 MEGA-225 Optima-225 AT-225 Elite-225, PE-225

## Source

- https://www.glsciencesinc.com/gc-column-equivalent-list-comparison-chart-agilent-restek-phenomenex

Last verified: 2026-08-15. Review by: 2027-08-15.
Part of [GC column stationary phase cross-reference by manufacturer](https://referencesource.org/lab-instrument-consumables-equivalence/).