Column packing for liquid - chromatography, separation column and liquid - chromatography - apparatus

摘要

A column packing, a separation column, an analysis device and an analytical method are provided with a shortened analysis time, without the separation rate of multi - components - amino acids to worsen. Disclosed is a column packing, which has a core region of a styrene - di - vinylbenzene - copolymer having a degree of crosslinking of 50% and an outer skin of styrene - di - vinylbenzene - copolymer having a degree of crosslinking of 20% or less; a separation column using the column packing as well as a high-speed - liquid chromatography apparatus and methods of analysis, in which these separation column use.