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

Learn how ISO/IEC 17043 applies to proficiency testing schemes for sampling, including evaluation models, statistical design, homogeneity, assigned values, and sampling uncertainty.

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.

Pre- and post-analytical PT/EQA schemes help evaluate the entire routine chemical analysis process, from sampling and preparation to interpretation and reporting of results.

How to define a PT strategy? Eurachem guidance explains how to set scope, frequency, and risk-based participation while integrating PT with broader QA tools.

How to select the right proficiency testing (PT) scheme for your laboratory? Key criteria, practical examples, and guidance for ensuring reliable and compliant results.

Learn how proficiency testing (PT) supports quality assurance in analytical laboratories, from z-score evaluation to bias assessment and long-term performance monitoring.

Learn how proficiency testing and interlaboratory comparisons support measurement quality, method validation, and performance benchmarking across analytical laboratories.

Method validation and verification ensure analytical results are reliable and fit for purpose. This article explains key concepts, performance characteristics, and guidance from the Eurachem Guide.

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