Table 1
Overview of units per variable.
| Type of column | Variable | Unit |
|---|---|---|
| Packed column | ||
| A | Dimensionless | |
| B | Dimensionless | |
| C | Dimensionless | |
| Dm | m2 · s–1 | |
| u | m · s–1 | |
| dp | μm | |
| k | Dimensionless | |
| Capillary column | ||
| dc | mm | |
| Dm | m2 · s–1 | |
| Df | m2 · s–1 | |
| u | m · s–1 | |
| dp | μm | |
| df | μm | |
| k | Dimensionless |
Table 2
Optimal flow rates for packed columns with 5μm particles at different internal diameters according to [13].
| Internal diameter (mm) | Optimal flow rate (mL/min) |
|---|---|
| 2 | 0.15–0.50 |
| 3 | 0.60 |
| 4 – 4.6 | 0.80–2.0 |
| 8 | 2.0–4.0 |
Table 3
Results of test calculations compared to guidelines of [13].
Calculated values are rounded to two decimals.
| Internal diameter (mm) | Optimal flow rate (mL/min) | Calculated flow rate (mL/min) |
|---|---|---|
| 2 | 0.15 – 0.50 | 0.28 |
| 3 | 0.60 | 0.63 |
| 4 | 0.80–2.0 | 1.11 |