Versatile Silica Columns for Polar Compounds and Fat‑Soluble Analytes
Normal Phase | ANP / HILIC | TYPE‑C™ Silica‑C™ | Preparative‑Ready
Cogent Silica HPLC columns provide reliable and flexible solutions for normal‑phase (NP), aqueous normal‑phase (ANP), and HILIC‑style separations, with options suitable for analytical and preparative HPLC. This category includes both traditional type‑B silica and TYPE‑C™ silica hydride phases, allowing laboratories to select the optimal surface chemistry for their application.
Silica‑based columns are commonly chosen for the retention and separation of polar compounds, including steroidal structures, fats, fat‑soluble vitamins, and other challenging analytes.
Why Use Silica Columns for Normal‑Phase and ANP / HILIC Methods?
Unmodified silica and silica hydride phases are especially effective for polar compounds when operated in:
Normal‑phase (NP) HPLC
Aqueous normal‑phase (ANP / HILIC)
HILIC‑style separations
Compared to reversed‑phase methods, silica columns provide orthogonal selectivity, making them valuable for difficult separations and method development. Choosing between TYPE‑C™ silica hydride and type‑B silica allows analysts to tailor retention behavior, equilibration time, and robustness.
Cogent Silica Column Options:
Cogent Silica‑C™ (TYPE‑C™ Silica Hydride)
Cogent Silica‑C™ HPLC columns are manufactured using unmodified TYPE‑C™ silica hydride, making them fundamentally different from conventional silica columns. This unique surface chemistry provides a hydrophobic silica surface with exceptional stability and fast equilibration.
Key advantages include:
Excellent performance in normal‑phase separations
Rapid equilibration between runs
No need to tightly control mobile‑phase water content
Highly reproducible retention
Unique selectivity compared to type‑B silica
Silica‑C™ columns are ideal for laboratories seeking precise, reproducible NP results without the complexity of traditional silica water management.
Cogent NP™ Silica HPLC columns are manufactured using world‑class type‑B silica and are packed and ready for immediate use in normal‑phase or HILIC methods. These columns are considered reliable workhorse silica columns for routine and preparative applications.
They offer predictable retention behavior and are well suited for laboratories running established NP methods.
Cogent HPS™ Silica columns are made using proprietary, base‑deactivated, 5 µm type‑B silica, designed to deliver improved peak shape and reduced secondary interactions. These columns are an excellent choice for USP® L03 methods and other applications requiring consistent, well‑defined separations.
Cogent MicroBee™ Silica HPLC columns are designed as comparable alternates to µBondapak® silica columns. These unmodified silica phases are widely used as economical and reliable alternatives for USP® L03 methods, particularly in legacy and validated workflows.
Key Features and Benefits
Designed for normal‑phase, ANP, and HILIC separations
Options using TYPE‑C™ silica hydride or type‑B silica
Excellent for polar compounds and fat‑soluble analytes
Suitable for analytical and preparative HPLC
Unique Silica‑C™ phase with fast equilibration
Proven silica options for USP® L03 methods
Reliable lot‑to‑lot reproducibility
Supported by MICROSOLV technical experts
Typical Applications
Normal‑phase HPLC separations
ANP / HILIC‑style methods
Steroidal compounds
Fats and fat‑soluble vitamins
Polar and moderately polar analytes
Analytical and preparative chromatography
USP® L03 compliant methods
Column Protection Recommendation
Important: MICROSOLV technical support strongly recommends using the Cogent Column Filter, which is included with each column, whenever possible. Column filters help protect against particulates, extend column lifetime, and maintain consistent chromatographic performance.
👉Learn more about the Cogent Column Filter for HPLC column protection
