This one day course focuses on the added functionalities of PTVs over standard hot inlets as a truly multi-mode inlet. Part of the day will be spent looking at the theory and advantages of cold split and cold splitless injections and the uses for cold-trapping, high final inlet temperatures, large volume injections and additional techniques like thermal desorption and extraction. The remainder of the day will be spent in the lab creating, using and optimising cold injection methods to analyse thermally labile and high molecular weight samples and looking at other PTV techniques. This course requires knowledge of GC or GC-MS.