What does HPLC stand for?

• A. High-Performance Liquid Chromatography
• B. High-Pressure Liquid Chromatography
• C. High-Precision Liquid Chromatography
• D. Hydrophilic-Phase Liquid Chromatography

Answer: (A)

HPLC stands for High-Performance Liquid Chromatography. The term “High-Performance” reflects the improved separation quality, speed, and sensitivity achieved with advanced instrumentation, such as high-pressure pumps and small-particle columns, compared with older liquid chromatography methods. The “Liquid” indicates that the mobile phase is a liquid, not a gas, and “Chromatography” means the technique separates components based on how they partition between the mobile phase and a stationary phase. While high pressure is used to drive the liquid through the column, the established name emphasizes performance improvements rather than pressure alone. The other options don’t fit because they either suggest a different descriptor that isn’t used (High-Pressure, High-Precision) or refer to a term (Hydrophilic-Phase) that isn’t part of the standard name.