Multiresidual analyzes search for the presence of pesticide residues by gas chromatography (GC) and liquid chromatography (LC). A single sample can therefore be subjected to GC-MS analyzes which detect over 400 active ingredients, to LC-MS / MS analyzes which detect over 250 or to GC-MS / MS which are even more sensitive and specific for food intended for newborns. (baby food). The combination of GC-MS and LC-MS / MS allows for coverage of all active ingredients. For herbicides, on the other hand, separate analyzes are carried out.