PFAS are among the most persistent environmental contaminants. Explore LC-MS/MS, GC-MS, TOF, and HRMS approaches for PFAS detection, identification, and quantification.

Learn the most common causes of SPE cartridge flow problems and how to troubleshoot them. Identify issues related to samples, solvents, manifold pressure, and precipitation.

Low SPE recovery does not have to mean method failure. Learn how fraction collection and analysis can identify analyte losses and guide effective troubleshooting steps.

Learn how Electron Capture Detectors (ECD) work in gas chromatography, including their operating principle, selectivity, sensitivity, and key practical considerations.

Are aqueous injections in GC really a problem? Overview of chemically bonded columns, backflash behavior, PEG “wax” phases, and best practices for water in GC workflows.

GC column trimming helps resolve contamination, ghost peaks, baseline instability, and peak tailing. Learn key symptoms and the correct technique for proper column cutting.

Guidance on selecting key GC column parameters — length, internal diameter, and film thickness — and their influence on resolution, retention, run time, and sample capacity.

Proper drying of the SPE sorbent is a critical step to achieve high sensitivity, good reproducibility, and maximum analyte recovery, especially for complex sample matrices.

How can you extend GC column lifetime and prevent contamination? Part 2 focuses on using liners with glass wool and proper column bake-out to maintain separation performance.

Dirty samples can quickly damage your GC column and shorten its lifetime. Learn simple, proven ways to protect your column, improve performance, and reduce downtime. Part 1 focuses on smart sample preparation.