HALO 1000 Å Diphenyl, 2.7 µm, 2.1 x 75mm

HALO 160 Å ES-CN, 2.7 µm, 1.0 x 50mm

HALO 90 Å AQ-C18, 2 µm, 2.1 x 100mm

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