Guard Column cartridges, Phenyl Hydride, replacement, 4.0 mm ID x 10 mm long cartridges packed with 4 um, 100 A phase 5/PK.

These Guard Columns are designed to protect your analytical columns from particulate and contaminants that will adsorb to your column. These columns are packed in Stainless Steel tubes with SS Frits. Labelled, and shipped in individual, black, delrin cases to protect and keep them from drying out. Use with guard column holder sold separately.

Use this guard column cartridge with a 3.0, 4.0, and 4.6 mm ID analytical columns.