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Optimized 300 Å Wide Pore Silica

Large biomolecules require sufficient pore accessibility to fully interact with the stationary phase. While many conventional wide pore silica materials are specified with an average pore size of 300 Å, they often contain a broad pore size distribution, reducing the effective surface area available to proteins and peptides.

Restek Viva™ Wide Pore columns are manufactured using a carefully controlled silica production process that creates a narrow pore size distribution centered around 300 Å. This design provides greater accessible surface area for large molecules, resulting in improved analyte retention, enhanced mass transfer, and superior chromatographic efficiency.

General-Purpose C18 Selectivity for Biomolecules

The Viva™ C18 stationary phase is a conventional monomeric octadecylsilane (USP L1) chemistry that offers balanced hydrophobic retention for a broad range of biomolecules. It is ideally suited for the separation of peptides, small proteins, recombinant proteins, and many therapeutic biomolecules.

Its versatile selectivity makes Viva C18 an excellent first-choice column for:

  • Peptide mapping
  • Protein purity testing
  • Intact protein analysis
  • Biopharmaceutical characterization
  • Enzymatic digest analysis
  • Proteomics research
  • LC-MS method development
  • Quality control laboratories

The end-capped stationary phase minimizes unwanted secondary interactions, promoting excellent peak symmetry and reproducible retention for both acidic and moderately basic analytes.

Key Features and Benefits

  • 300 Å wide pore silica optimized for proteins and peptides
  • Narrow pore size distribution for maximum accessible surface area
  • High-purity, base-deactivated silica
  • Monomeric C18 bonded phase (USP L1)
  • End-capped surface for improved peak shape
  • Excellent recovery of large biomolecules
  • High chromatographic efficiency
  • Outstanding lot-to-lot reproducibility
  • Compatible with LC-UV and LC-MS detection
  • Available in multiple column dimensions and 3 µm and 5 µm particle sizes for analytical HPLC and UHPLC applications.

Reliable Performance for Biopharmaceutical Analysis

Modern protein and peptide analysis demands chromatographic columns that combine high efficiency with exceptional robustness. Restek manufactures the complete Viva™ column—from silica synthesis through stationary phase bonding and final column packing—ensuring consistent quality and reproducible chromatographic performance from batch to batch.

This integrated manufacturing approach helps laboratories maintain reliable analytical methods throughout the lifetime of the column while simplifying method transfer between instruments and production lots.

Typical Applications

Restek Viva™ Wide Pore 300 Å C18 columns are widely used for:

  • Peptide mapping and characterization
  • Therapeutic protein analysis
  • Monoclonal antibody research
  • Recombinant protein purification
  • Biopharmaceutical quality control
  • Protein degradation studies
  • Biomarker research
  • Proteomics and bioanalytical LC-MS

The Ideal Choice for Large Molecule Separations

Whether you are developing new analytical methods or performing routine quality control, the Restek Viva™ Wide Pore 300 Å C18 HPLC column provides the performance required for reliable protein and peptide separations. Its optimized pore architecture, proven C18 selectivity, and excellent manufacturing consistency make it a dependable solution for modern bioanalytical laboratories seeking high resolution, reproducibility, and robust chromatographic performance.

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