Knowledge Base
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Mastering Gas Chromatography in 7 Comprehensive Steps!
This article guides analysts in GC analyses through efficient sample preparation, instrument configuration, initial condition setup, separation optimization, qualitative identification using retention indices or GC–MS, quantitative analysis via internal standards or standard addition, rigorous method validation, ensuring accurate, precise, reproducible results across diverse unknown sample analyses consistently. -
Choosing Gas Chromatography Columns: Key Parameters
In gas chromatography, column length, internal diameter, and film thickness critically determine efficiency, retention times, pressure requirements, and sample capacity. This article reviews how each parameter impacts chromatographic performance and provides practical selection guidelines—balancing resolution, analysis time, and cost—to help analysts choose optimal capillary columns for diverse applications. -
Pursuing Excellence in Pharmaceutical Quality Control: Best Practices and Insights for Laboratories
In this article, one of Welch’s long-term customer shares their practices and insights on pharmaceutical laboratory quality control in both HPLC and GC, along with their firsthand experience of Welch’s HPLC columns.
