Guard Column cartridges, Phenyl Hydride, replacement, 4.0 mm ID x 10 mm long cartridges packed with 4 um, 100 A phase. Cogent TYPE-C Brand. 5/PK.
Additional Info:
Phenyl Hydride™ Replacement Guard Cartridges for Analytical Column Protection
The 69020‑PG5 Phenyl Hydride™ Guard Column Replacement Cartridges are designed to protect analytical Phenyl Hydride™ HPLC columns from particulates and strongly retained contaminants that can compromise chromatographic performance. Packed with Phenyl Hydride™ stationary phase using Cogent TYPE‑C™ silica hydride technology, these guard cartridges help preserve retention stability, peak shape, and column efficiency in routine HILIC workflows.
Replacement cartridges play a critical role in extending analytical column lifetime, especially in applications involving complex samples or frequent injections. A compatible guard column holder is required and is sold separately.
Why Use Phenyl Hydride™ Guard Cartridges
Using matched guard cartridges provides several important benefits:
Protects analytical columns from particulates and irreversibly adsorbed contaminants
Preserves chromatographic selectivity, peak shape, and retention reproducibility
Extends analytical column service life and reduces replacement frequency
Supports consistent performance across extended analytical runs
These cartridges act as a sacrificial protection stage, capturing contaminants before they reach the analytical column.
High‑Quality Construction and Handling
Each guard cartridge in the 69020‑PG5 pack is:
Packed in durable stainless‑steel tubing 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
These replacement cartridges are packed with the same Phenyl Hydride™ stationary phase chemistry used in 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
Phase consistency is essential for maintaining method integrity when guard protection is implemented.
Intended Use and Compatibility
The 69020‑PG5 replacement guard cartridges are designed for use with:
3.0 mm, 4.0 mm, and 4.6 mm ID analytical Phenyl Hydride™ columns
HILIC‑mode analytical HPLC workflows
A compatible guard column holder is required and is sold separately. Guard cartridges are installed upstream of the analytical column.
Replacement Guidance
Guard cartridges should be replaced when:
System backpressure increases
Peak shape degradation is observed
Retention behavior changes
Sample cleanliness or matrix complexity increases
Regular replacement ensures continued column protection and consistent analytical performance.
These Guard Columns are designed to protect your analytical columns from particulate and contaminants that will adsorb to your column. These columns are packed in Stainless Steel tubes with SS Frits. Labelled, and shipped in individual, black, delrin cases to protect and keep them from drying out. Use with guard column holder sold separately.
Use this guard column cartridge with a 3.0, 4.0, and 4.6 mm ID analytical columns.