HALO 1000 Å Diphenyl, 2.7 µm, 4.6 x 30mm

HALO 160 Å C30, 2.7 µm, 3.0 x 100mm

HALO 90A PCS C18, 2.7um 1.5mm x 100mm

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