In this stu­dy, a di­rect, real-time sample-preparation-free-„sniffing“ ana­ly­sis of es­sen­ti­al oils was per­for­med by SICRIT® cou­pled to a por­ta­ble sin­gle quad MS to clas­si­fy dif­fe­rent ty­pes of es­sen­ti­al oils and to show the sui­ta­b­li­li­ty of this me­tho­do­lo­gy for high th­rough­put ana­ly­sis of es­sen­ti­al oil qua­li­ty and au­then­ti­ca­ti­on ana­ly­sis.