Markes International, a UK-based company, is a world leader in thermal desorption (TD) and in sampling and preconcentration techniques for volatile and semi-volatile compounds by GC/MS. From the UNITY-xr and TD100-xr thermal desorbers to the automated Centri platforms for headspace, SPME and HiSorb, and systems for continuous air and greenhouse gas monitoring, Markes offers cryogen-free, high-sensitivity, high-throughput solutions. Applications include air quality, material emissions, flavours and fragrances, food, research and forensics.