PFAS LC Column Anatomy: Which Phase, Dimensions, and Particle Type Are Best?
With the expansion of PFAS target analyte lists into shorter chain compounds, the need for better methods is growing. This article explores the impact of phase, dimensions, and particle type and provides options that ensure fast, accurate results.
How Does Fill Gas Choice Affect Sulfur Compound Stability in Air Canisters?
Nitrogen is often used as the fill gas for method validation, calibration, and QC samples, but it can lead to inaccurate results for reactive sulfur compounds. In this article, we explain how fill gas affects your results and show why air is a better choice when sampling unstable sulfur compounds.
Adapting to TO-15A Method Changes for Air Analysis
Newly published method TO-15A is the first revision in 20 years to this widely used method for GC-MS analysis of VOCs collected in air sampling canisters. Join us for this invaluable webinar that discusses the most significant changes and how to solve the challenges associated with them.
Optimize Splitless Hold Time in Seconds with EZGC Flow Calculator
For splitless injection, you need to set a hold time that is long enough to completely vaporize your analytes and transfer them to the column, but not so long that excess solvent is introduced. Fortunately, as this quick blog video shows, you can find an ideal hold time in seconds using Restek’s EZGC flow calculator.