24029 Supelco 厂笔叠®-1气相毛细管色谱柱 SPB®-1 Capillary GC ColumnL × I.D. 30 m × 0.25 mm, df 1.00 μm
24028 Supelco 厂笔叠®-1气相毛细管色谱柱 SPB®-1 Capillary GC Column L × I.D. 30 m × 0.25 mm, df 0.25 μm
Supelco 24218-U SPB®-辛基毛细管气相色谱柱 SPB®-Octyl Capillary GC Column L × I.D. 30 m × 0.25 mm, df 0.25 μm