Table 2.
Reproducibility of EOF in (poly)bis-SorbPC coated capillaries as a function of capillary inner diameter.
| Capillary i.d. | EOF × 10−4 (cm2/Vs)a) |
|||
|---|---|---|---|---|
| Day 1 | Day 15 | Meanb) | Barec) | |
| 25 μm | 3.6 (0.5) | 3.6 (0.5) | 3.6 (0.5) | 7.8 (0.3) |
| 50 μm | 3.9 (0.8) | 4.0 (1.8) | 4.0 (1.8) | 7.8 (0.9) |
| 75 μm | 4.6 (0.7) | 5.9 (13) | 5.3 (16.9) | 8.4 (5.0) |
| 100 μm | 6.5 (7.0) | 6.4 (25) | 6.6 (17) | 10.0 (8) |
Conditions: Capillary: 42 cm × 50 μm i.d., 32 cm to detector; E = 240 V/cm. Buffer, 20 mM borate, pH 9.3
a)
The EOF values on each day are the mean (%RSD) of 10 runs.
b)
The mean is calculate for 20 runs (n = 20).
c)
The mean for bare capillary is calculated for 6 runs (n= 6).