Guard Column Starter Set, Bidentate C18, complete with 5 each 4.0 mm ID x 10 mm long cartridges packed with 4 um, 100 A phase and 1 each guard column holder. Cogent TYPE-C Brand. 1 EA.
Additional Info:
The 40018‑PG4 Cogent Bidentate C18™ Guard Column Starter Set provides everything needed to implement reliable guard‑column protection for 3.0, 4.0, and 4.6 mm ID Cogent TYPE‑C™ analytical HPLC columns. This kit is designed to extend analytical column lifetime while preserving chromatographic selectivity, efficiency, and reproducibility.
The starter set includes five 4.0 mm ID × 10 mm long guard cartridges packed with Cogent Bidentate C18™ stationary phase (4 µm, 100 Å), along with one robust stainless‑steel guard cartridge holder. The holder is compatible with all Cogent TYPE‑C™ guard cartridges, enabling simple, repeatable cartridge replacement without disturbing the analytical column.
Under typical laboratory use, the five included cartridges often provide sufficient protection for the lifetime of an analytical column, making this starter kit a practical and cost‑effective solution for laboratories standardizing on TYPE‑C™ reversed‑phase methods.
Each guard cartridge is shipped in an individual, closeable black Delrin case, preventing drying and protecting the cartridge from contamination or physical damage prior to installation.
Why Use a Guard Column Starter Kit?
Guard columns protect the analytical column from:
Undissolved sample particulates
Strongly retained matrix contaminants
Debris that can foul frits or reduce column efficiency
The 40018‑PG4 starter kit ensures phase‑matched protection, avoiding retention shifts or peak distortion that can occur with non‑matched guard systems, while significantly reducing analytical column replacement costs.
Kit Contents
1 × Stainless‑Steel Guard Cartridge Holder
Compatible with all Cogent TYPE‑C™ guard cartridges
Designed for secure sealing and minimal dead volume
5 × Bidentate C18™ Guard Cartridges
4.0 mm ID × 10 mm length
4 µm particle size, 100 Å pore size
Packed with Cogent TYPE‑C™ silica hydride stationary phase
Individually packaged in protective Delrin cases
Key Features
Phase‑Matched Guard Protection
Same Bidentate C18™ TYPE‑C™ chemistry as analytical columns
Maintains selectivity, retention, and resolution
Prevents chromatographic artifacts caused by mismatched guard phases
Designed for Larger‑ID Analytical Columns
Optimized for 3.0, 4.0, and 4.6 mm ID HPLC columns
Suitable for UV‑based and standard analytical workflows
Easy Cartridge Replacement
Rapid guard cartridge changes without removing the analytical column
Minimizes downtime and simplifies routine maintenance
Long‑Term Column Protection
Five cartridges typically provide extended protection
Maximizes return on investment for high‑value analytical columns
Typical Applications
Routine analytical HPLC
UV‑based reversed‑phase methods
Method development and validation
High‑value analytical column protection
TYPE‑C™ reversed‑phase chromatography