4
Figure 4: Performance comparison of Accucore XL 4 µm and Accucore 2.6 µm columns using kinetic plots: column
impedance (E) relative to linear velocity (u)
All columns 150 × 4.6 mm; test conditions: water / acetonitrile (50:50 v/v) mobile phase, 30 °C column
temperature, test probes: phenetole and theophylline (t
0
marker)
Impedance
u
0
(mm/s)
1.E+04
1.E+03
5
1
Accucore XL 4μm
Accucore 2.6μm