HALO 160 Å ES-CN, 2.7 µm, 2.1 x 150mm

HALO 90 Å Phenyl-Hexyl, 2.7 µm, 2.1 x 5mm, Guard

HALO 90 Å C8, 5 µm, 2.1 x 20mm

HALO 90 Å PAH, 2.7 µm, 2.1 x 5mm, Guard Column 3p