Ultra Low-Bleed (Q) GC/MS Columns

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DB-5Q Ultra Low-Bleed GC/MS Columns - NEW

J&W DB-5Q columns deliver industry-leading performance for a broad-range of mass spectrometry applications. By combining Ultra Inert surface deactivation with Ultra Low-Bleed chemistry, the J&W DB-5Q delivers exceptional signal-to-noise ratios and mass spectral integrity for challenging active, semi-volatile analytes. Each J&W DB-5Q column is designed for optimal sample throughput, with fast conditioning and outstanding durability, and is tested with a demanding test probe mixture to ensure consistent and reliable column performance. DB-5Q columns are ideal for general use and trace level applications.

DB-5Q Ultra Low-Bleed GC/MS Columns
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Features

  • Exceptionally low column bleed for improved sensitivity and mass spectral integrity
  • Excellent peak symmetry for challenging, active analytes
  • Outstanding column durability even at high operating temperatures
  • Fast column conditioning
  • Identical selectivity to DB-5ms and DB-5ms UI
  • Available in 0.18 mm id column configuration for higher sample throughput and hydrogen carrier gas
  • Individually tested with Uber One test probe mixture
  • Performance Summary shipped with each column
  • Compatible with any GC/MS system

How It Works

Data Quality - Why Reducing Column Bleed Matters

Column bleed remains to be one of the most observed, yet most commonly misunderstood, aspects of Mass Spectrometer data. Bleed elevates chromatographic baselines and creates spectral interference, lowering the quality and confidence of your data. Column bleed can cause a rise in your baseline which is problematic for low signal-to-noise analytes as peak integration can deleteriously impact your data quality.

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Applications

The New Gold Standard in GC/MS Column Performance

J&W 5Q GC columns deliver the new gold standard for GC/MS column performance and productivity by providing:

  • Ultra low-bleed performance to improve data accuracy with high spectral fidelity and stable baseline integration
  • Ultra inert performance to increase sensitivity for active, trace level analytes and provides balanced deactivation for multi-class analyte panels
  • Ultra-fast conditioning and outstanding column durability to improve uptime by limiting frequency of column exchanges

GC/MS Approach for E&Ls in Complex Matrices

This study demonstrates how unit resolution GC/MS workflow was employed for identifying GC-amenable extractables and leachables (E&L) compounds by leveraging spectral deconvolution in combination with retention index-based time filtering. An addition of the accurate mass high-resolution GC/Q-TOF and DB-5Q column into the workflow provided extra confidence in compound identification, sensitivity, and capability of structural elucidation.

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