HALO 160 Å ES-CN, 2.7 µm, 1.0 x 250mm

Halo 2.7um, 1000A, Diphenyl

HALO 90 Å Phenyl-Hexyl, 2.7 µm, 2.1 x 75mm

HALO 160 Å ES-CN, 5 µm, 3.0 x 5mm, Guard Column 3