HALO 400 Å C4, 3.4 µm, 4.6 x 20mm

Halo 2.7um, 90A, AQ-C18

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

HALO 90 Å C8, 2.7 µm, 2.1 x 20mm