Solid-phase extraction (SPE) is the gold standard for sample preparation in chromatographic analysis. It is used to capture, clean, and concentrate samples while removing interfering compounds, ...

SINGAPORE – A tub of soil, a container full of crushed vegetation and a bottle of clear liquid were part of a package of items sent by the UN atomic watchdog to Singapore in 2025. These items had ...

Sample preparation is essential for accurate, robust and reproducible analysis. Solid phase extraction (SPE) offers the ...