Guard Column cartridge, Bidentate C18, replacement, 2.0 mm ID x 10 mm long cartridge packed with 4 um, 100 A phase. Cogent TYPE-C Brand. 1 EA.
Additional Info:
The 40018‑PG3 Cogent Bidentate C18™ Guard Column Cartridge is a single replacement guard cartridge designed to protect 2.1 mm ID Cogent TYPE‑C™ analytical HPLC columns from particulates and strongly retained contaminants that can degrade performance or shorten column lifetime.
Each cartridge is packed with Cogent Bidentate C18™ stationary phase (4 µm, 100 Å) and housed in a stainless‑steel tube with stainless‑steel frits, providing mechanical stability and consistent flow. The phase chemistry is matched to Cogent TYPE‑C™ Bidentate C18 analytical columns, ensuring that retention, selectivity, and efficiency are preserved when a guard is installed.
The cartridge is individually labeled and shipped in a protective black Delrin case to prevent drying, contamination, or physical damage prior to use. This cartridge is used with a compatible Cogent TYPE‑C™ guard column holder, sold separately.
Single cartridges are often preferred when laboratories use multiple guard phases across different methods and want the flexibility to pair specific guard chemistries with different analytical columns—without committing to a multi‑pack.
Why Use a Single Replacement Guard Cartridge?
Guard cartridges protect analytical columns by trapping:
Undissolved sample particulates
Strongly retained matrix contaminants
Debris that can block frits or permanently foul column packing
Using a single replacement cartridge allows targeted replacement when individual methods require different guard chemistries, enabling method‑specific optimization with minimal downtime and cost.
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 tube with stainless‑steel frits
Key Features
Phase‑Matched Protection
Same Bidentate C18™ TYPE‑C™ chemistry as analytical columns
Maintains selectivity and retention behavior
Prevents peak distortion from mismatched guard phases
Designed for 2.1 mm ID Columns
Optimized for 2.1 mm analytical HPLC workflows
Suitable for LC‑MS and low‑flow reversed‑phase applications
Durable and Reliable Construction
Stainless‑steel cartridge body and frits
Consistent flow and reliable sealing
Appropriate for routine analytical use
Flexible Purchasing Option
Single‑cartridge format ideal for method‑specific needs
No excess inventory when multiple guard phases are used
Easy replacement using an existing guard holder
Typical Applications
Routine analytical HPLC
LC‑MS and LC‑MS/MS
Method development and validation
TYPE‑C™ reversed‑phase workflows
Guard‑phase optimization across multiple methods