IDEX PEEK Tubing

Average of theoretical plate (n=3)
Inner diameter of tubing0.06mm0.12mm0.25mm
Peak (1)792785246
Peak (2)779076523535
Peak (3)10704103457998
Peak (4)1011397727689
  • Column: SunShell C18, 2.6 μm 50 x 2.1 mm
  • Mobile phase: CH3CN/H2O=60/40
  • Flow rate: 0.3 mL/min
  • Temperature: Ambient
  • Tube length: 30 cm (PEEK, from the column to the flow cell)
  • Instrument: X-LC (JASCO) Response time: 0.01 sec

The theoretical plates were compared after changing the inner diameter of the tubing between the column and the flow cell of the detector. A tubing with larger inner diameter has a larger dead volume, which makes the peak width to be wider. As a result, the theoretical plate decreases. We recommend using tubing with ID 0.12 mm or less for core shell columns for maximum efficiency. As can be seen there was little advantage to go to 0.06 mm ID tubing, but the back pressure increases, so ID 0.12 mm is the preferred choice.

P/N 1535L, PEEK tubing 1/16” OD x 0.125mm ID, 50 feet

 

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