HALO 90 Å AQ-C18, 2.7 µm, 1.0 x 100mm

Poroshell 120,SB-Aq,4.6x100mm,2.7um

HALO 90 Å ES-CN, 2 µm, 3.0 x 30mm

HALO 160 Å ES-CN, 5 µm, 3.0 x 5mm, Guard Column 3