Delta-Pak C4 Guard-Pak Insert, 300Å, 5 µm, 10/pk

The Delta-Pak C4 Guard-Pak Insert is designed to protect your analytical column while maintaining high efficiency in reversed-phase separations of peptides, proteins, and natural products. Utilizing bonded, endcapped 5 µm spherical silica particles, this guard insert offers robust protection with excellent reproducibility, thanks to its C4 chemistry and 300Å pore size.

Ideal for HPLC workflows, Delta-Pak Guard-Pak Inserts help extend the life of your main analytical column by trapping particulates and contaminants before they reach the core column. These inserts provide a low-silanol activity profile, are compatible with a broad pH range (2–8), and operate at pressures up to 6000 psi, making them a durable solution for high-demand lab environments.

Pair this guard with high-performance consumables like the PVDF LC Acrodisc Syringe Filter for even greater reliability in your sample prep routine. Shop lab equipment to complete your setup with trusted Waters accessories.

What kind of protection does the Delta-Pak C4 Guard-Pak Insert provide?
It safeguards the analytical column from particulates and contaminants, helping preserve resolution, backpressure, and overall performance over time.

Is this insert suitable for protein or peptide analysis?
Yes, its 300Å pore size and C4 chemistry make it particularly well-suited for large biomolecules such as peptides and proteins.

How often should I replace my Guard-Pak Insert?
Replace the insert when you notice increasing backpressure, degraded chromatographic resolution, or according to your lab's SOPs for routine maintenance.