HALO 400 A Diphenyl, 3.4 µm, 2.1 x 20mm

HALO 400 Å C4, 3.4 µm, 3.0 x 30mm

Halo 2.7um, 90A, C18

HALO 90 Å Biphenyl, 2 µm, 2.1 x 5mm, Guard Column