midpolarity phase; Crossbond diphenyl dimethyl polysiloxane
An Rtx-35 column is a popular confirmation column for pesticides and herbicides in conjunction with an Rtx-5 or Rtx-1701 column. The higher phenyl content causes useful elution order and retention time changes.
- General-purpose columns for organochlorine pesticides, PCB congeners (e.g., Aroclor mixes), herbicides, pharmaceuticals, sterols, rosin acids, phthalate esters.
- Temperature range: 40°C to 320°C.
- Equivalent to USP G42 phase