| Routine analytical HPLC | 4.6 × 150 mm | 5 µm | Fully porous | 80–120 Å | 0.8–1.2 mL/min | General small-molecule assays, impurity testing, quality control and method transfer | Broad instrument compatibility, moderate backpressure and strong method robustness | Longer run times and lower efficiency than smaller-particle columns |
| Routine method with moderate speed | 4.6 × 100 mm | 3–3.5 µm | Fully porous | 80–120 Å | 0.8–1.2 mL/min | Established pharmaceutical and environmental methods requiring shorter analysis times | Good balance of resolution, runtime and pressure on conventional HPLC systems | Higher pressure than 5 µm columns; system dwell volume can affect fast gradients |
| High-efficiency conventional HPLC | 4.6 × 100 mm | 2.5–3 µm | Fully porous | 80–120 Å | 0.7–1.0 mL/min | Complex small-molecule samples when extra resolving power is needed | Higher theoretical plate count and improved separation of closely eluting compounds | Pressure can approach the practical limit of older HPLC instruments |
| Fast, high-efficiency HPLC | 4.6 × 100 mm | 2.6–2.7 µm | Superficially porous (core-shell) | 80–120 Å | 0.6–1.0 mL/min | Rapid pharmaceutical assays and high-throughput small-molecule screening | High efficiency with lower pressure than many fully porous particles of similar performance | Requires careful extra-column-volume control to preserve efficiency |
| Reduced-solvent analytical HPLC | 3.0 × 100 mm | 2.6–2.7 µm | Superficially porous (core-shell) | 80–120 Å | 0.3–0.5 mL/min | Methods that need lower solvent consumption without moving fully to UHPLC | Lower mobile-phase use while maintaining useful efficiency and sensitivity | Injection volume, tubing dimensions and detector cell volume must be scaled appropriately |
| UHPLC maximum efficiency | 2.1 × 100 mm | 1.7–1.9 µm | Fully porous | 80–120 Å | 0.2–0.4 mL/min | Fast gradients, trace analysis and high-resolution small-molecule separations | Excellent efficiency, narrow peaks and short analysis times | Requires a low-dispersion, high-pressure system and well-filtered samples |
| UHPLC fast screening | 2.1 × 50 mm | 1.7–1.9 µm | Fully porous | 80–120 Å | 0.2–0.4 mL/min | High-throughput screening and methods where speed is more important than maximum peak capacity | Very short runtime and low solvent consumption | Lower total resolving capacity than a 100–150 mm column; selectivity becomes critical |
| High-resolution complex mixture | 4.6 × 250 mm | 3–5 µm | Fully porous | 80–120 Å | 0.6–1.0 mL/min | Samples containing many structurally similar compounds or difficult impurity profiles | Greater resolving capacity from the longer bed length | Longer runtime, greater solvent use and increased pressure compared with shorter columns |
| Peptides and larger biomolecules | 2.1–4.6 × 100–150 mm | 2.6–5 µm | Wide-pore fully porous or wide-pore superficially porous | 200–300 Å | 0.2–1.0 mL/min | Peptides, oligonucleotides and other analytes that require larger pores | Improved access to the stationary phase for larger molecules | Small-molecule efficiency may be lower than with 80–120 Å pores; adsorption and recovery require evaluation |
| Preparative or semi-preparative purification | 10–21.2 × 150–250 mm | 5–10 µm | Fully porous | 80–300 Å, depending on analyte size | Flow must be scaled to column diameter and pressure | Purification and fraction collection rather than routine analytical quantitation | Higher sample-loading capacity and practical fraction collection | Lower efficiency per unit length and substantially higher solvent consumption |