HPLC columns

About HPLC Columns

HPLC columns are packed with stationary phases tailored to separate chemical substances based on their interactions with the mobile phase under high pressure. Common types include reverse phase, normal phase, ion exchange, and size exclusion columns, each designed to target specific molecular properties such as polarity, charge, or size.

Applications of HPLC columns span pharmaceuticals, biotechnology, environmental monitoring, and food safety testing, where they enable precise analysis of complex samples. When selecting an HPLC column, factors to consider include column length, internal diameter, particle size, pore size, and stationary phase chemistry. These parameters influence resolution, analysis time, and sensitivity.

• Column dimensions: Typical lengths range from 50 to 250 mm with internal diameters usually between 2.1 and 4.6 mm.
• Stationary phases: C18 reverse phase is the most common, but other chemistries like C8, cyano, or phenyl may be used depending on the analytes.
• Particle size and pore size: Smaller particles generally provide higher resolution but require higher operating pressures.

Careful maintenance and handling extend the lifespan of HPLC columns, making second-hand or refurbished options an attractive alternative for budget-conscious laboratories. QuestPair features a curated selection of such HPLC columns suitable for various chromatographic requirements.