HALO 1000 Å ES-C18, 2.7 µm, 10.0 x 50mm

HALO 160 Å ES-C18, 2.7 µm, 2.1 x 5mm, Guard Colum

Poroshell 120, EC-C18, 3x100mm, 4um

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