Catalog Number - 69020-PG6

Single Phenyl Hydride™ Guard Cartridge for Flexible Analytical Column Protection

The 69020‑PG6 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 peak shape, retention stability, and column efficiency by capturing particulates and strongly retained contaminants before they reach the analytical column.

Single cartridges are ideal when flexibility is required or when replacing guard protection on an as‑needed basis. A compatible guard column holder is required and is sold separately.

Why Use a Phenyl Hydride™ Guard Cartridge

Adding a matched Phenyl Hydride guard cartridge offers several important benefits:

• Protects analytical columns from particulates and irreversibly adsorbed contaminants

• Preserves chromatographic selectivity, peak shape, and retention reproducibility

• Extends analytical column lifetime and reduces replacement costs

• Maintains consistent performance across repeated injections

The guard cartridge functions as a sacrificial protection stage, helping maintain the integrity of the analytical column.

High‑Quality Construction and Handling

Each 69020‑PG6 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

This guard cartridge is packed with the same Phenyl Hydride™ stationary phase chemistry used in 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

Phase consistency is essential for maintaining method integrity when guard protection is implemented.

Intended Use and Compatibility

The 69020‑PG6 replacement guard cartridge is 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. The cartridge installs directly upstream of the analytical column.

When to Choose a Single Guard Cartridge

Single guard cartridges are often selected when:

• Occasional replacement is preferred over multi‑packs

• Different methods require different guard configurations

• Evaluating guard usage before committing to a 5‑pack

This option provides flexibility while maintaining effective column protection.

This Guard Column is designed to protect your analytical column from particulate and contaminants that will adsorb to your column. Packed in a Stainless Steel Tube, it has SS Frits. Labelled, and shipped in an individual, black, delrin case to protect and keep it from drying out. Use with guard column holder sold separately.

Sometimes, the individual cartridge is preferred over buying a pack of 5 when different "Guard Column" phases are preferred and pairing them with different analytical phases for unique separations.

Use this guard column cartridge with a 3.0, 4.0, and 4.6 mm ID analytical columns.