# phenyl methyl polysiloxane — GC column stationary phase cross-reference by manufacturer

For phenyl methyl polysiloxane, usp g-code(s) is G3; agilent equivalents is HP-50+; restek equivalents is Rtx-50; supelco/merck equivalents is SPB-50; quadrex equivalents is 007-17, verified against its source on 2026-08-15.

- **Phase chemistry:** phenyl methyl polysiloxane _(verified: appears in the quote below)_
- **USP G-code(s):** G3 _(verified: appears in the quote below)_
- **Agilent equivalents:** HP-50+ _(verified: appears in the quote below)_
- **Restek equivalents:** Rtx-50 _(verified: appears in the quote below)_
- **Supelco/Merck equivalents:** SPB-50 _(verified: appears in the quote below)_
- **Quadrex equivalents:** 007-17 _(verified: appears in the quote below)_

## What the source says

> Rtx-50 | phenyl methyl polysiloxane | G3 | HP-50+ | | | | SPB-50 | 007-17 |

## Sources disagree

More than one authority states this, and they do not state the same
thing. Both are reproduced with the source each came from.

### Restek equivalents

discover.restek.com says restek equivalents is **Rtx-50**, as of 2026-08-15.

> Rtx-50 | phenyl methyl polysiloxane | G3 | HP-50+ | | | | SPB-50 | 007-17 |

Source: https://discover.restek.com/articles/gnot3472/gc-column-cross-reference-chart

discover.restek.com says restek equivalents is **MXT-50**, as of 2026-08-15.

> MXT-50 | phenyl methyl polysiloxane | G3 | | | | | | UAC-17 |

Source: https://discover.restek.com/articles/gnot3472/gc-column-cross-reference-chart


### Quadrex equivalents

discover.restek.com says quadrex equivalents is **007-17**, as of 2026-08-15.

> Rtx-50 | phenyl methyl polysiloxane | G3 | HP-50+ | | | | SPB-50 | 007-17 |

Source: https://discover.restek.com/articles/gnot3472/gc-column-cross-reference-chart

discover.restek.com says quadrex equivalents is **UAC-17**, as of 2026-08-15.

> MXT-50 | phenyl methyl polysiloxane | G3 | | | | | | UAC-17 |

Source: https://discover.restek.com/articles/gnot3472/gc-column-cross-reference-chart


## Source

- https://discover.restek.com/articles/gnot3472/gc-column-cross-reference-chart

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/).