HALO 1000 Å Diphenyl, 2.7 µm, 4.6 x 150mm

HALO 90 Å Phenyl-Hexyl, 5 µm, 4.6 x 5mm, Guard Co

HALO 160 Å ES-CN, 2.7 µm, 3.0 x 5mm, Guard Column

HALO 160 Å ES-CN, 2.7 µm, 1.0 x 50mm