金屬填充 GC 色譜柱（適用于 Agilent，配置“A”）
Metal Packed GC Column (fits Agilent, Configuration "A")
phase 10% Carbowax 20M, matrix 80/100 Chromosorb W HP support, L × O.D. × I.D. 6.0ft (1.8m) × 1/8 in. × 2.1mm
In packed columns the carrier gas percolates through the porous bed and separation is achieved by moving the solutes apart. Packed columns are made up of two main materials; stainless steel and Pyrex glass. Metal packed columns are more suitable for long and high carrier gas flow rates to tolerate the elevated pressures. Chromosorb W is a fragile white solid which is prepared by heating diatomaceous earth with a flux. The resulting fine structure is cemented over glass which results in large and irregular pores. HP is the classification of a support as high performance grade.