low-polarity phase; Crossbond diphenyl dimethyl polysiloxane
The diphenyl dimethyl polysiloxane stationary phase is the most popular GC stationary phase and is used in a wide variety of applications. All residual catalysts and low molecular weight fragments are removed from the Rtx-5 polymer, providing a tight monomodal distribution and extremely low bleed.
- General-purpose columns for drugs, solvent impurities, pesticides, hydrocarbons, PCB congeners (e.g., Aroclor mixes), essential oils, semivolatiles.
- Equivalent to USP G27 and G36 phases.
Note: DB-5MS is a silarylene-based polymer, similar to Rxi-5Sil MS.