Guard Column cartridge, Phenyl Hydride, 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:
Single Phenyl Hydride™ Guard Cartridge for Flexible Analytical Column Protection
The 69020‑PG3 Phenyl Hydride™ Guard Column Replacement Cartridge provides targeted protection for analytical Phenyl Hydride™ HPLC columns when a single‑unit replacement is preferred. Packed with Phenyl Hydride™ stationary phase using Cogent TYPE‑C™ silica hydride technology, this guard cartridge helps preserve retention stability, peak shape, and column efficiency by capturing particulates and strongly retained contaminants before they reach the analytical column.
Single cartridges are especially useful for laboratories that require phase‑specific flexibility or occasional replacement without purchasing multi‑packs. A compatible guard column holder is required and is sold separately.
Why Use a Phenyl Hydride™ Guard Cartridge
Adding a matched guard cartridge offers several important benefits:
Protects analytical columns from particulates and irreversibly adsorbed contaminants
Preserves chromatographic selectivity, peak shape, and retention consistency
Extends analytical column lifetime and reduces replacement costs
Maintains reproducible performance across repeated injections
The guard cartridge functions as a sacrificial protection stage, maintaining the integrity of the analytical column.
High‑Quality Construction and Handling
Each 69020‑PG3 guard cartridge is:
Packed in a durable stainless‑steel tube with stainless‑steel frits
Filled with 4 µm, 100 Å Phenyl Hydride™ stationary phase
Clearly labeled for identification and traceability
To prevent drying, contamination, or handling damage, each cartridge is shipped in an individual, closeable black Delrin® storage case.
Phenyl Hydride™ Stationary Phase Consistency
The guard cartridge uses the same Phenyl Hydride™ stationary phase chemistry as corresponding analytical columns, ensuring:
No change in chromatographic selectivity or elution order
Minimal added dead volume
Seamless integration into existing HILIC methods
Stable performance under high‑organic mobile‑phase conditions
This consistency is essential for maintaining method integrity when guard protection is employed.
Intended Use and Compatibility
The 69020‑PG3 replacement guard cartridge is designed for use with:
2.1 mm ID analytical Phenyl Hydride™ columns
HILIC‑mode analytical HPLC and LC‑MS workflows
A compatible guard column holder is required and is sold separately. The cartridge installs directly upstream of the analytical column.
When to Choose a Single Guard Cartridge
Individual guard cartridges are often selected when:
Occasional replacement is needed between runs
Different guard chemistries are rotated for specific methods
Evaluating guard performance before committing to multi‑packs
This approach provides flexibility while maintaining column protection.