Overview

Cogent Column Filters are designed to provide robust and reliable particulate protection for HPLC columns by preventing non‑dissolved material from reaching sensitive chromatographic hardware. To meet a wide range of application needs, these filters are available in two well‑defined stainless‑steel porosity options.

Each pore size supports specific levels of filtration efficiency, allowing users to select the optimal configuration for their analytical requirements.

Available Porosity Options

Cogent pre‑column filters are offered exclusively in the following pore sizes:

• 2 µm stainless‑steel mesh
  Catalog Number: 49650-020
  Ideal for general laboratory use and routine HPLC applications where moderate particulate load is expected.

• 0.5 µm stainless‑steel mesh
  Catalog Number: 49650-005
  Recommended for higher‑sensitivity applications or systems prone to generating fine particulates, offering enhanced protection for column frits.

These two pore‑size configurations cover the vast majority of HPLC filtration needs while maintaining strong mechanical durability, chemical resistance, and consistent flow characteristics.

Application Notes

• Both porosity options are compatible with standard Cogent Column Filter housings.
• Filters are intended for disposable use and should be replaced when backpressure increases or particulate buildup is detected.
• Combining the correct pore size with proper sample handling can significantly extend the lifespan of analytical columns.

Related Resource

HPLC Column Protection – Learn more about using filtration as a preventative measure to reduce downtime and improve column longevity.