HALO 400 Å C4, 3.4 µm, 2.1 x 100mm

HALO 1000 Å ES-C18, 2.7 µm, 1.0 x 150mm

HALO 90 Å ES-CN, 2 µm, 3.0 x 250mm

HALO 90 Å PAH, 2.7 µm, 3.0 x 5mm, Guard Column 3p