Catalog Number - 82360-05P-4

Cogent NP Diol™ HPLC Columns are designed for the separation of hydrophilic and polar compounds using Normal Phase and HILIC chromatography modes. Manufactured using high-purity 100Å silica bonded with a short hydrocarbon ligand containing a terminal diol functional group, this stationary phase is not end capped and provides versatile selectivity for compounds that may be difficult to retain using conventional reversed-phase chromatography. NP Diol™ is widely used as an alternative for USP L20 methods and for developing robust analytical methods requiring enhanced retention of polar analytes.

82360-05P-4 is packed with 3 µm NP Diol™ particles in a 4.0 mm ID x 50 mm analytical format. The short 50 mm length is optimized for rapid analysis, method development, and high-throughput screening applications. The 3 µm particle size provides higher efficiency and sharper peak shapes than comparable 5 µm columns, although increased operating pressure should be expected. The 4.0 mm internal diameter offers an alternative analytical format for laboratories using methods requiring this specific column configuration.

The NP Diol™ stationary phase is commonly selected for hydrophilic and polar compounds analyzed by HILIC and Normal Phase chromatography. It is often used as a replacement for unmodified silica columns because it offers improved robustness and broader solvent compatibility while maintaining useful selectivity for polar analytes. This column is suitable for pharmaceutical, food, environmental, and general analytical applications involving challenging polar compounds.

Key Benefits

• NP Diol™ stationary phase

• USP L20 equivalent chemistry

• High-purity 100Å silica

• Diol bonded phase

• 3 µm particle size

• Higher efficiency than 5 µm particles

• Sharper peak shapes

• Suitable for HILIC separations

• Suitable for Normal Phase chromatography

• Improved robustness versus unmodified silica

Typical Applications

• USP L20 methods

• HILIC chromatography

• Normal Phase HPLC

• Polar compound analysis

• Hydrophilic compound analysis

• Pharmaceutical analysis

• Food and beverage testing

• Environmental testing

• Method development

• Replacement of silica columns

Specifications

• Product Type: Analytical HPLC Column

• Stationary Phase: NP Diol™

• USP Classification: L20

• Chromatography Modes: HILIC and Normal Phase

• Particle Size: 3 µm

• Pore Size: 100Å

• Column Dimensions: 4.0 mm ID x 50 mm

• Recommended Flow Rate: 0.8–1.8 mL/min

• Column Hardware: Stainless Steel

• Brand: Cogent

Special Order Item Information

• Please review the Special Order Item Information for complete details.

• For pricing confirmation, availability, lead times, or application assistance, please contact MICROSOLV Customer Service.

Important Notes

• Suitable for HILIC and Normal Phase chromatography

• USP L20 equivalent chemistry

• Not end capped

• Designed for hydrophilic and polar compounds

• Provides higher efficiency than comparable 5 µm columns

• Generates higher operating backpressure than 5 µm particles

• Compatible with analytical HPLC systems capable of supporting 3 µm particle columns

• Often selected as a more robust alternative to unmodified silica columns

• Broad solvent compatibility

• 50 mm length minimizes solvent consumption and analysis time

• This is a Special Order Item