HALO 1000 Å C4, 2.7 µm, 0.3 x 50mm

HALO 90 Å Biphenyl, 2.7 µm, 4.6 x 5mm, Guard Colu

Poroshell 120 PFP, 3.0x100mm,2.7um

HALO 90 Å C8, 5 µm, 3.0 x 5mm, Guard Column 3pk