Inertsil ODS-HL 1.9um UHPLC PEEK 2.1 x 50mm (U)HPLC Column

The Inertsil ODS-HL HPLC column 50x2.1mm, 1.9µm, is a highly packed octadecyl phase (also known as ODS, RP-18, C18) for reverse-phase chromatography. Due to its high C18 packing density, the phase exhibits pronounced hydrophobic retention and alternative selectivity compared to standard C18 phases. Inertsil ODS-HL is particularly suitable for analytes that require stronger retention or better resolution of hydrophobic components. Typical applications include pharmaceutical analysis, active ingredient and impurity analysis, food analysis, environmental analysis, and methods that require robust retention of nonpolar substances.

Performance Characteristics and Benefits

• High-purity silica
• Controlled pore structure and reproducible surface
• High inertness due to reduced silanol and metal activity
• Excellent peak shapes for acidic, neutral, and basic analytes
• Reliable reproducibility for routine analysis

Additional Notes

The Inertsil series is based on a high-purity, spherical silica matrix whose pore structure, particle size distribution, and surface are carefully controlled during production. Low metal contamination and careful surface treatment reduce the activity of free silanol groups. This minimizes undesirable secondary interactions—particularly tailing and adsorption with basic or chelating analytes—and promotes stable retention times. This reproducible silica matrix forms the basis for the various Inertsil modifications and ensures reliable selectivities across the series. Appropriate Inertsil pre-column cartridges should be used to protect the analytical packing bed from particles and the sample matrix and to extend column lifespan.

Legal Notices

Inertsil is a registered trademark of the manufacturer GL Sciences Inc., Tokyo, Japan.