HALO 90 Å ES-CN, 2.7 µm, 2.1 x 20mm

Halo 2.7um, 90A, Phenyl-Hexyl

HALO 400 Å C4, 3.4 µm, 2.1 x 20mm

HALO 400 Å C4, 3.4 µm, 4.6 x 5mm, Guard Column 3p