Cartridge guard column E designed with a special holder and cartridge, universal self-adjusting connections, reusable by changing cartridges.
Cartridges contain the same high performance packing material that are used in our GL Sciences analytical columns. Easy-to-use, convenient, and disposable guard columns can protect your more expensive analytical columns.

Cartridge guard column Ei is a special design for the separation which need to avoid the metal accessible surface. It is signed with a special PEEK holder and cartridge.

GL Cart guard column are designed as economical type to protect your expensive analytical column. GL Cart is one dimension 5 mm × 4.6 mm I.D..
(Compatible analytical columns' I.D. is 4.0 mm, 4.6 mm.) GL Cart holder is reusable.

Packed guard column and Mini guard column are designed different with cartridges’ type, using a high pressure to pack it as a guard column, and also can sustain analytical column’s performance.
Packed guard column has length 33 mm and 50 mm two types, and Mini guard column has length 10 mm.