# 100% Dimethylpolysiloxane — GC column stationary phase cross-reference by manufacturer For 100% Dimethylpolysiloxane, usp g-code(s) is G1, G2, G38; agilent equivalents is DB-1ms UI, HP-1ms UI, VF-1ms, CP-Sil 5 CB Low Bleed/MS; restek equivalents is Rxi-1ms; phenomenex equivalents is ZB-1 Plus; supelco/merck equivalents is Equity-1, verified against its source on 2026-08-15. - **Phase chemistry:** 100% Dimethylpolysiloxane _(verified: appears in the quote below)_ - **USP G-code(s):** G1, G2, G38 _(verified: appears in the quote below)_ - **Agilent equivalents:** DB-1ms UI, HP-1ms UI, VF-1ms, CP-Sil 5 CB Low Bleed/MS _(verified: appears in the quote below)_ - **Restek equivalents:** Rxi-1ms _(verified: appears in the quote below)_ - **Phenomenex equivalents:** ZB-1 Plus _(verified: appears in the quote below)_ - **Supelco/Merck equivalents:** Equity-1 _(verified: appears in the quote below)_ - **Thermo Fisher equivalents:** TR-1MS _(verified: appears in the quote below)_ - **SGE/Trajan equivalents:** BPX1 _(verified: appears in the quote below)_ - **Macherey-Nagel equivalents:** Optima-1ms _(verified: appears in the quote below)_ - **Quadrex equivalents:** 007-1 _(verified: appears in the quote below)_ ## What the source says > InertCap 1MS G1, G2, G38 100% Dimethylpolysiloxane DB-1ms UI, HP-1ms UI, VF-1ms, CP-Sil 5 CB Low Bleed/MS Rxi-1ms BPX1 ZB-1 Plus TR-1MS Equity-1 007-1 Optima-1ms ## 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 glsciencesinc.com says agilent equivalents is **DB-1ms UI, HP-1ms UI, VF-1ms, CP-Sil 5 CB Low Bleed/MS**, as of 2026-08-15. > InertCap 1MS G1, G2, G38 100% Dimethylpolysiloxane DB-1ms UI, HP-1ms UI, VF-1ms, CP-Sil 5 CB Low Bleed/MS Rxi-1ms BPX1 ZB-1 Plus TR-1MS Equity-1 007-1 Optima-1ms Source: https://www.glsciencesinc.com/gc-column-equivalent-list-comparison-chart-agilent-restek-phenomenex glsciencesinc.com says agilent equivalents is **DB-1, HP-1, ULTRA-1, CP-Sil 5 CB**, as of 2026-08-15. > InertCap 1 G1, G2, G38 100% Dimethylpolysiloxane DB-1, HP-1, ULTRA-1, CP-Sil 5 CB Rtx-1 BP1 ZB-1 TR-1 SPB-1 ENV-1 HR-1 UA + -1(S) , UA + -1 007-1 VB-1 MEGA-1 Optima-1 AT-1, EC-1 Elite-1, PE-1 DA-1 AB-1 Source: https://www.glsciencesinc.com/gc-column-equivalent-list-comparison-chart-agilent-restek-phenomenex ### Restek equivalents glsciencesinc.com says restek equivalents is **Rxi-1ms**, as of 2026-08-15. > InertCap 1MS G1, G2, G38 100% Dimethylpolysiloxane DB-1ms UI, HP-1ms UI, VF-1ms, CP-Sil 5 CB Low Bleed/MS Rxi-1ms BPX1 ZB-1 Plus TR-1MS Equity-1 007-1 Optima-1ms Source: https://www.glsciencesinc.com/gc-column-equivalent-list-comparison-chart-agilent-restek-phenomenex glsciencesinc.com says restek equivalents is **Rtx-1**, as of 2026-08-15. > InertCap 1 G1, G2, G38 100% Dimethylpolysiloxane DB-1, HP-1, ULTRA-1, CP-Sil 5 CB Rtx-1 BP1 ZB-1 TR-1 SPB-1 ENV-1 HR-1 UA + -1(S) , UA + -1 007-1 VB-1 MEGA-1 Optima-1 AT-1, EC-1 Elite-1, PE-1 DA-1 AB-1 Source: https://www.glsciencesinc.com/gc-column-equivalent-list-comparison-chart-agilent-restek-phenomenex ### Phenomenex equivalents glsciencesinc.com says phenomenex equivalents is **ZB-1 Plus**, as of 2026-08-15. > InertCap 1MS G1, G2, G38 100% Dimethylpolysiloxane DB-1ms UI, HP-1ms UI, VF-1ms, CP-Sil 5 CB Low Bleed/MS Rxi-1ms BPX1 ZB-1 Plus TR-1MS Equity-1 007-1 Optima-1ms Source: https://www.glsciencesinc.com/gc-column-equivalent-list-comparison-chart-agilent-restek-phenomenex glsciencesinc.com says phenomenex equivalents is **ZB-1**, as of 2026-08-15. > InertCap 1 G1, G2, G38 100% Dimethylpolysiloxane DB-1, HP-1, ULTRA-1, CP-Sil 5 CB Rtx-1 BP1 ZB-1 TR-1 SPB-1 ENV-1 HR-1 UA + -1(S) , UA + -1 007-1 VB-1 MEGA-1 Optima-1 AT-1, EC-1 Elite-1, PE-1 DA-1 AB-1 Source: https://www.glsciencesinc.com/gc-column-equivalent-list-comparison-chart-agilent-restek-phenomenex ### Supelco/Merck equivalents glsciencesinc.com says supelco/merck equivalents is **Equity-1**, as of 2026-08-15. > InertCap 1MS G1, G2, G38 100% Dimethylpolysiloxane DB-1ms UI, HP-1ms UI, VF-1ms, CP-Sil 5 CB Low Bleed/MS Rxi-1ms BPX1 ZB-1 Plus TR-1MS Equity-1 007-1 Optima-1ms Source: https://www.glsciencesinc.com/gc-column-equivalent-list-comparison-chart-agilent-restek-phenomenex glsciencesinc.com says supelco/merck equivalents is **SPB-1**, as of 2026-08-15. > InertCap 1 G1, G2, G38 100% Dimethylpolysiloxane DB-1, HP-1, ULTRA-1, CP-Sil 5 CB Rtx-1 BP1 ZB-1 TR-1 SPB-1 ENV-1 HR-1 UA + -1(S) , UA + -1 007-1 VB-1 MEGA-1 Optima-1 AT-1, EC-1 Elite-1, PE-1 DA-1 AB-1 Source: https://www.glsciencesinc.com/gc-column-equivalent-list-comparison-chart-agilent-restek-phenomenex ### Thermo Fisher equivalents glsciencesinc.com says thermo fisher equivalents is **TR-1MS**, as of 2026-08-15. > InertCap 1MS G1, G2, G38 100% Dimethylpolysiloxane DB-1ms UI, HP-1ms UI, VF-1ms, CP-Sil 5 CB Low Bleed/MS Rxi-1ms BPX1 ZB-1 Plus TR-1MS Equity-1 007-1 Optima-1ms Source: https://www.glsciencesinc.com/gc-column-equivalent-list-comparison-chart-agilent-restek-phenomenex glsciencesinc.com says thermo fisher equivalents is **TR-1**, as of 2026-08-15. > InertCap 1 G1, G2, G38 100% Dimethylpolysiloxane DB-1, HP-1, ULTRA-1, CP-Sil 5 CB Rtx-1 BP1 ZB-1 TR-1 SPB-1 ENV-1 HR-1 UA + -1(S) , UA + -1 007-1 VB-1 MEGA-1 Optima-1 AT-1, EC-1 Elite-1, PE-1 DA-1 AB-1 Source: https://www.glsciencesinc.com/gc-column-equivalent-list-comparison-chart-agilent-restek-phenomenex ### SGE/Trajan equivalents glsciencesinc.com says sge/trajan equivalents is **BPX1**, as of 2026-08-15. > InertCap 1MS G1, G2, G38 100% Dimethylpolysiloxane DB-1ms UI, HP-1ms UI, VF-1ms, CP-Sil 5 CB Low Bleed/MS Rxi-1ms BPX1 ZB-1 Plus TR-1MS Equity-1 007-1 Optima-1ms Source: https://www.glsciencesinc.com/gc-column-equivalent-list-comparison-chart-agilent-restek-phenomenex glsciencesinc.com says sge/trajan equivalents is **BP1**, as of 2026-08-15. > InertCap 1 G1, G2, G38 100% Dimethylpolysiloxane DB-1, HP-1, ULTRA-1, CP-Sil 5 CB Rtx-1 BP1 ZB-1 TR-1 SPB-1 ENV-1 HR-1 UA + -1(S) , UA + -1 007-1 VB-1 MEGA-1 Optima-1 AT-1, EC-1 Elite-1, PE-1 DA-1 AB-1 Source: https://www.glsciencesinc.com/gc-column-equivalent-list-comparison-chart-agilent-restek-phenomenex ### Macherey-Nagel equivalents glsciencesinc.com says macherey-nagel equivalents is **Optima-1ms**, as of 2026-08-15. > InertCap 1MS G1, G2, G38 100% Dimethylpolysiloxane DB-1ms UI, HP-1ms UI, VF-1ms, CP-Sil 5 CB Low Bleed/MS Rxi-1ms BPX1 ZB-1 Plus TR-1MS Equity-1 007-1 Optima-1ms Source: https://www.glsciencesinc.com/gc-column-equivalent-list-comparison-chart-agilent-restek-phenomenex glsciencesinc.com says macherey-nagel equivalents is **Optima-1**, as of 2026-08-15. > InertCap 1 G1, G2, G38 100% Dimethylpolysiloxane DB-1, HP-1, ULTRA-1, CP-Sil 5 CB Rtx-1 BP1 ZB-1 TR-1 SPB-1 ENV-1 HR-1 UA + -1(S) , UA + -1 007-1 VB-1 MEGA-1 Optima-1 AT-1, EC-1 Elite-1, PE-1 DA-1 AB-1 Source: https://www.glsciencesinc.com/gc-column-equivalent-list-comparison-chart-agilent-restek-phenomenex ## 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/).