Guard Column cartridges, Bidentate C18, replacement, 2.0 mm ID x 10 mm long cartridges packed with 4 um, 100 A phase. Cogent TYPE-C Brand. 5/PK.
Additional Info:
The 40018‑PG2 Cogent Bidentate C18™ Guard Column Cartridges are replacement guard cartridges designed to protect 2.1 mm ID Cogent TYPE‑C™ analytical HPLC columns from particulates and strongly retained contaminants that can reduce column performance or shorten column lifetime.
Each cartridge is packed with Cogent Bidentate C18™ stationary phase (4 µm, 100 Å) and housed in stainless‑steel tubing with stainless‑steel frits, providing mechanical stability and consistent flow characteristics. The stationary phase chemistry is phase‑matched to Cogent TYPE‑C™ Bidentate C18 analytical columns, ensuring that chromatographic selectivity, retention, and efficiency are preserved when a guard cartridge is installed.
All cartridges are individually labeled and shipped in protective black Delrin cases to prevent drying, contamination, or physical damage prior to installation. These cartridges are used with a separate Cogent TYPE‑C™ guard column holder, sold separately.
Why Use Replacement Guard Cartridges?
Guard cartridges protect analytical columns by trapping:
Undissolved sample particulates
Matrix contaminants that adsorb strongly to stationary phases
Debris that can block frits or permanently foul column packing
Replacing only the guard cartridge—rather than the holder—allows routine maintenance with minimal downtime and no disruption to the analytical column, helping maintain consistent performance across long analytical campaigns.
Product Details
Internal diameter: 2.0 mm
Length: 10 mm
Particle size: 4 µm
Pore size: 100 Å
Phase: Cogent TYPE‑C™ Bidentate C18™
Housing: Stainless steel with stainless‑steel frits
Key Features
Phase‑Matched Protection
Same Bidentate C18™ TYPE‑C™ chemistry as analytical columns
Prevents selectivity changes or peak distortion
Maintains chromatographic integrity
Designed for 2.1 mm ID Columns
Optimized for 2.1 mm analytical HPLC workflows
Well suited for LC‑MS and low‑flow methods
Durable Construction
Stainless‑steel tubing and frits
Reliable sealing and consistent flow
Suitable for routine analytical use
Convenient Handling
Individually packaged in Delrin storage cases
Easy cartridge replacement using a compatible guard holder
Reduces system downtime
Typical Applications
Routine analytical HPLC
LC‑MS and LC‑MS/MS
Method development and validation
High‑value analytical column protection
TYPE‑C™ reversed‑phase workflows