Guard Column cartridges, Bidentate C18 2.o, replacement, 2.0 mm ID x 10 mm long cartridges packed with 2.2 um, 120 A phase. Cogent TYPE-C Brand. 5/PK.
Additional Info:
The 40218‑PG2 Cogent Bidentate C18™ 2.o Guard Column Cartridges are replacement guard cartridges engineered to protect 2.1 mm ID Cogent TYPE‑C™ analytical HPLC columns operating under high‑efficiency, near‑UHPLC conditions. These guards are specifically phase‑matched to Bidentate C18™ 2.o analytical columns to preserve chromatographic performance while preventing damage from particulates and strongly retained contaminants.
Each cartridge is packed with Cogent Bidentate C18™ 2.o stationary phase (2.2 µm, 120 Å) and housed in stainless‑steel tubing with stainless‑steel frits, providing excellent mechanical stability and pressure tolerance. This construction supports elevated operating pressures associated with smaller particle sizes and high‑performance analytical methods.
All cartridges are individually labeled and shipped in protective black Delrin cases, preventing drying, contamination, or physical damage prior to installation. These cartridges are used with a compatible Cogent TYPE‑C™ guard column holder, sold separately.
Why Use Bidentate C18™ 2.o Replacement Guard Cartridges?
High‑efficiency analytical methods place increased stress on column packing and frits. Proper guard protection is critical to:
Capture undissolved particulates before they enter the analytical column
Trap strongly retained matrix components
Preserve peak shape, resolution, and retention stability
Extend the service life of high‑value 2.2 µm analytical columns
Replacing only the guard cartridge—rather than the holder—allows routine maintenance with minimal downtime and without disturbing the analytical column.
Product Details
Internal diameter: 2.0 mm
Length: 10 mm
Particle size: 2.2 µm
Pore size: 120 Å
Phase: Cogent TYPE‑C™ Bidentate C18™ 2.o
Housing: Stainless steel tube with stainless‑steel frits
Key Features
Phase‑Matched High‑Efficiency Protection
Same Bidentate C18™ 2.o TYPE‑C™ chemistry as analytical columns
Maintains selectivity, retention, and efficiency
Avoids artifacts caused by mismatched guard phases
Designed for 2.1 mm ID Columns
Optimized for 2.1 mm low‑flow and LC‑MS workflows
Suitable for near‑UHPLC performance on standard HPLC systems
Durable Stainless‑Steel Construction
High‑pressure‑capable stainless‑steel cartridge body and frits
Consistent flow and reliable sealing
Appropriate for routine high‑performance analytical use
Convenient 5‑Pack Configuration
Cost‑effective option for ongoing column protection
Individually packaged cartridges simplify handling
Easy replacement using an existing guard holder
Typical Applications
High‑efficiency analytical HPLC
Near‑UHPLC methods using 2.2 µm particles
LC‑MS and LC‑MS/MS
Method development and validation
Protection of high‑value TYPE‑C™ analytical columns