# Proprietary phase — GC column stationary phase cross-reference by manufacturer

For Proprietary phase, agilent equivalents is DB-XLB; restek equivalents is Rtx-XLB; supelco/merck equivalents is MDN-12, verified against its source on 2026-08-15.

- **Phase chemistry:** Proprietary phase _(verified: appears in the quote below)_
- **Agilent equivalents:** DB-XLB _(verified: appears in the quote below)_
- **Restek equivalents:** Rtx-XLB _(verified: appears in the quote below)_
- **Supelco/Merck equivalents:** MDN-12 _(verified: appears in the quote below)_
- **Phenomenex equivalents:** MR1, ZB-XLB _(per discover.restek.com, not stated by the source above)_
- **Macherey-Nagel equivalents:** OPTIMA XLB _(per discover.restek.com, not stated by the source above)_
- **USP G-code(s):** G3 _(per discover.restek.com, not stated by the source above)_
- **SGE/Trajan equivalents:** BPX50 _(per discover.restek.com, not stated by the source above)_
- **Quadrex equivalents:** 007-17MS _(per discover.restek.com, not stated by the source above)_

## What the source says

> GsBP-XLB Proprietary phase | DB-XLB | Rtx-XLB | MDN-12

## 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.

### Agilent equivalents

gs-tek.com says agilent equivalents is **DB-XLB**, as of 2026-08-15.

> GsBP-XLB Proprietary phase | DB-XLB | Rtx-XLB | MDN-12

Source: https://gs-tek.com/gc-column-cross-reference/

discover.restek.com says agilent equivalents is **DB-XLB, VF-Xms**, as of 2026-08-15.

> Rxi-XLB | proprietary phase | | DB-XLB, VF-Xms | | MR1, ZB-XLB | OPTIMA XLB | | |

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

discover.restek.com says agilent equivalents is **DB-17ms**, as of 2026-08-15.

> Rxi-17Sil MS | proprietary phase | G3 | DB-17ms | BPX50 | ZB-50 | OPTIMA 17 MS | | 007-17MS |

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

discover.restek.com says agilent equivalents is **VF-624ms**, as of 2026-08-15.

> Rxi-624Sil MS | proprietary phase | G43 | VF-624ms | BPX-Volatiles | ZB-624plus | | | 007-502, 007-608, 007-624 |

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


### Restek equivalents

gs-tek.com says restek equivalents is **Rtx-XLB**, as of 2026-08-15.

> GsBP-XLB Proprietary phase | DB-XLB | Rtx-XLB | MDN-12

Source: https://gs-tek.com/gc-column-cross-reference/

discover.restek.com says restek equivalents is **Rxi-XLB**, as of 2026-08-15.

> Rxi-XLB | proprietary phase | | DB-XLB, VF-Xms | | MR1, ZB-XLB | OPTIMA XLB | | |

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

discover.restek.com says restek equivalents is **Rxi-17Sil MS**, as of 2026-08-15.

> Rxi-17Sil MS | proprietary phase | G3 | DB-17ms | BPX50 | ZB-50 | OPTIMA 17 MS | | 007-17MS |

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

discover.restek.com says restek equivalents is **Rxi-624Sil MS**, as of 2026-08-15.

> Rxi-624Sil MS | proprietary phase | G43 | VF-624ms | BPX-Volatiles | ZB-624plus | | | 007-502, 007-608, 007-624 |

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

discover.restek.com says restek equivalents is **Rtx-440**, as of 2026-08-15.

> Rtx-440 | proprietary phase | | Restek Innovation |

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

discover.restek.com says restek equivalents is **Rxi-PAH**, as of 2026-08-15.

> Rxi-PAH | proprietary phase | G51 | Restek Innovation |

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


## Source

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