PS Analytical provides analytical solutions for the determination of selenium in a wide range of sample types — including liquids, solids and gases — using techniques that deliver ultra-trace sensitivity and reliable results. Selenium is an element of dual character: essential at low concentrations but potentially toxic at higher levels, so accurate measurement of both total selenium and its species is important in environmental, industrial and regulatory contexts.

Their selenium systems typically combine hydride generation with atomic fluorescence spectrometry (AFS) or other sensitive detection approaches, improving detection limits and reducing interferences compared with many alternative methods. In addition to total selenium analysis, PS Analytical also supports selenium speciation workflows, where individual chemical forms of selenium (such as selenite and selenate) are separated and quantified to reveal detailed chemical behaviour and potential bioavailability. 

These solutions are used in environmental monitoring (e.g., surface water, groundwater), industrial process control, waste discharge compliance and research applications where understanding selenium concentration and form is critical for risk assessment and decision-making.