# dimethyl polysiloxane (low bleed) — GC column stationary phase cross-reference by manufacturer

For dimethyl polysiloxane (low bleed), usp g-code(s) is G1, G2, G9, G38; agilent equivalents is HP-1ms, HP-1ms UI, DB-1ms, DB-1ms UI, VF-1ms; restek equivalents is Rxi-1ms; phenomenex equivalents is ZB-1ms; supelco/merck equivalents is SLB-1ms, verified against its source on 2026-08-15.

- **Phase chemistry:** dimethyl polysiloxane (low bleed) _(verified: appears in the quote below)_
- **USP G-code(s):** G1, G2, G9, G38 _(verified: appears in the quote below)_
- **Agilent equivalents:** HP-1ms, HP-1ms UI, DB-1ms, DB-1ms UI, VF-1ms _(verified: appears in the quote below)_
- **Restek equivalents:** Rxi-1ms _(verified: appears in the quote below)_
- **Phenomenex equivalents:** ZB-1ms _(verified: appears in the quote below)_
- **Supelco/Merck equivalents:** SLB-1ms _(verified: appears in the quote below)_
- **SGE/Trajan equivalents:** BP1 _(verified: appears in the quote below)_
- **Macherey-Nagel equivalents:** OPTIMA 1 MS, OPTIMA 1 MS, Accent _(verified: appears in the quote below)_
- **Quadrex equivalents:** 007-1MS _(verified: appears in the quote below)_

## What the source says

> Rxi-1ms | dimethyl polysiloxane (low bleed) | G1, G2, G9, G38 | HP-1ms, HP-1ms UI, DB-1ms, DB-1ms UI, VF-1ms | BP1 | ZB-1ms | OPTIMA 1 MS, OPTIMA 1 MS, Accent | SLB-1ms | 007-1MS

## Source

- https://www.restek.com/articles/gc-column-cross-reference

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/).