Guard Column Cartridges, NP Silica, 3um, 100A. 2.1mm ID x 10mm Length. Cogent Brand. 5/PK.
Additional Information:
Cogent NP Silica™ Guard Column Cartridges are designed to protect valuable analytical HPLC columns from particulate contamination, strongly retained compounds, and sample matrix components that can shorten column life and degrade chromatographic performance. Packed with ultra-high purity, low metal content 100Å NP Silica™ stationary phase that is not chemically modified, these guard cartridges provide the same selectivity characteristics as the analytical column while serving as a sacrificial protection device.
82361-PG1 Guard Column Cartridges are packed with 3 µm NP Silica™ media in a 2.1 mm ID x 10 mm format specifically designed for use with 2.1 mm ID analytical columns. By trapping contaminants before they reach the analytical column, these cartridges help maintain column efficiency, reproducibility, and retention characteristics while reducing replacement costs and instrument downtime.
NP Silica™ guard cartridges are commonly used with HILIC and Normal Phase chromatography methods involving hydrophilic and polar compounds. The matching stationary phase chemistry minimizes changes in chromatographic selectivity while extending analytical column lifetime. For optimal performance, these cartridges must be installed in a compatible Cogent Guard Column Holder.
Key Benefits
NP Silica™ stationary phase
USP L3 equivalent chemistry
Ultra-high purity silica
Low metal content silica
Unmodified silica surface
3 µm particle size
Protects analytical columns from contamination
Extends analytical column life
Maintains chromatographic performance
Compatible with 2.1 mm ID columns
Typical Applications
HILIC chromatography
Normal Phase HPLC
USP L3 methods
Polar compound analysis
Hydrophilic compound analysis
Routine analytical testing
Method development
Sample cleanup prior to analytical column
Column protection
Pharmaceutical and environmental analyses
Specifications
Product Type: Guard Column Cartridges
Stationary Phase: NP Silica™
USP Classification: L3
Particle Size: 3 µm
Pore Size: 100Å
Cartridge Dimensions: 2.1 mm ID x 10 mm
Quantity: 5 Cartridges per Pack
Cartridge Housing: Stainless Steel
Frit Material: Stainless Steel Frits with PEEK Frit Caps
Brand: Cogent
Required Guard Column Holder
A Cogent Guard Column Holder (Catalog Number 83200-GH) is required for use with these guard column cartridges.
Important Notes
Designed for 2.1 mm ID NP Silica™ analytical columns
Suitable for HILIC and Normal Phase chromatography
USP L3 equivalent chemistry
Unmodified silica stationary phase
Low metal content, high-purity silica
Protects analytical columns from particulates and strongly retained contaminants
Helps extend analytical column lifetime
Maintains method reproducibility and column performance
Must be used with a Cogent Guard Column Holder (83200-GH)
Supplied as a pack of 5 cartridges