HALO 1000 Å ES-C18, 2.7 µm, 4.6 x 50mm

HALO 160 Å ES-C18, 2.7 µm, 0.3 x 100mm

Poroshell HPH-C8, 2.1x100mm, 2.7um

HALO 1000 Å C4, 2.7 µm, 3.0 x 5mm, Guard Column 3