What is the main advantage of capillary electrophoresis over agarose gel electrophoresis?

Capillary electrophoresis offers a key advantage in that it does not utilize a stationary support like agarose gel electrophoresis does. Instead, capillary electrophoresis operates within a narrow capillary tube, allowing for the rapid separation of charged particles based on their size and charge. This free-flowing environment leads to increased efficiency and resolution, as there are no interactions with a solid matrix that can hinder or slow down the movement of analytes.

Additionally, the absence of a stationary support contributes to the generation of less heat during the process, which can lead to greater stability and more accurate results. The other potential options provided, while being characteristics of various electrophoresis methods, do not specifically highlight the unique and primary advantage of capillary electrophoresis that distinguishes it from agarose gel systems.