HALO 90 Å C8, 2.7 µm, 2.1 x 20mm

HALO 1000 Å Diphenyl, 2.7 µm, 2.1 x 5mm, Guard Co

HALO 90 Å Biphenyl, 5 µm, 4.6 x 75mm

HALO 400 A Diphenyl, 3.4 µm, 3.0 x 5mm