HALO 400 Å Diphenyl, 3.4 µm, 2.1 x 150mm

HALO 1000 Å C4, 2.7 µm, 2.1 x 250mm

HALO 90 Å PFP, 2.7 µm, 0.5 x 50mm

HALO 90 Å PAH, 2.7 µm, 4.6 x 5mm, Guard Column 3p