Guard Column Starter Set, Bidentate C18, complete with 5 each 2.0 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‑PG1 Cogent Bidentate C18™ Guard Column Starter Set provides everything required to implement guard‑column protection for 2.1 mm ID Cogent TYPE‑C™ analytical columns. This kit is designed to extend analytical column lifetime while maintaining chromatographic performance and minimizing downtime.
The starter set includes five 2.0 mm ID × 10 mm long guard cartridges, each packed with Cogent Bidentate C18™ stationary phase (4 µm, 100 Å), along with one durable stainless‑steel guard cartridge holder. The holder is compatible with all Cogent TYPE‑C™ guard cartridges, allowing easy cartridge replacement without disturbing the analytical column.
Under typical laboratory use, the five included cartridges often provide sufficient protection for the full lifetime of an analytical column, making this kit a cost‑effective and practical entry point for users adopting TYPE‑C™ guard protection.
Each guard cartridge is shipped in an individual, closeable Delrin case, preventing the packing material from drying out and protecting the cartridge from physical damage prior to use.
Why Use a Guard Column Starter Kit?
Guard columns play a critical role in protecting analytical columns from:
Undissolved sample particulates
Strongly retained contaminants
Matrix components that foul or permanently damage column packing
The 40018‑PG1 starter kit ensures proper mechanical compatibility and phase matching, reducing the risk of peak distortion, added dead volume, or retention shifts that can occur with mismatched guard systems.
Kit Contents
1 × Stainless‑Steel Guard Cartridge Holder
Compatible with all Cogent TYPE‑C™ guard cartridges
Designed for reliable sealing and minimal dead volume
5 × Bidentate C18™ Guard Cartridges
2.0 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 and retention characteristics
Prevents performance drift caused by mismatched guard phases
Designed for 2.1 mm ID Columns
Optimized for 2.1 mm analytical HPLC workflows
Ideal for LC‑MS and low‑flow reversed‑phase applications
Easy Cartridge Replacement
Guard cartridges can be replaced quickly
No need to remove or recondition the analytical column
Minimizes system downtime
Long‑Term Column Protection
Five cartridges typically provide long‑term protection
Helps maximize return on investment for analytical columns
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