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  1. Chromservis
  2. Chromatography
  3. Stationary phases
  4. More about chromatography
  5. Rtx-65
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Chromatography

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        Rtx-65

        (Crossbond® 65% diphenyl/35%dimethyl polysiloxane)GC column

        • Mid to high polarity phase.
        • Equivalent to USP G17 phase.

        The Rtx®-65 phase contains the highest phenyl content of any bonded stationary phase available, to improve separation of aromatic compounds through increased phase-analyte interaction. A unique polarity makes these columns ideal for a variety of analyses, from phenols to FAMEs. As a confirmation column for EPA Method 604 phenols, an Rtx®-65 column produces a different elution order, compared to the primary Rtx®-5 column. Rtx®-65 columns elute FAMEs according to equivalent chain length, similar to bonded Carbowax® columns, but the Rtx®-65 phase does not suffer the thermal stability limitations of other polar stationary phases.

        Applications
        • Phenols
        • Fatty acids
        Temperature limits
        ID (mm) df(µm) Temperature limits (°C)
        0.25 0.25 50 to 300
        0.25 0.50 50 to 280/300
        0.25 1.00 50 to 260/280
        0.32 0.25 50 to 300
        0.32 0.50 50 to 280/300
        0.32 1.00 50 to 300
        0.53 0.25 40 to 290/300
        0.53 0.50 40 to 270/290
        0.53 1.00 40 to 250/270