[eng] This work presents the advantages, drawbacks and performances of Multisyringe Flow Injection Analysis (MSFIA) systems in the determination of metals, metalloids, organic and inorganic compounds in several kind of samples employing spectroanalytical techniques. General topics, as multisyringe description, software and comparison between MSFIA and other continuous flow techniques are also discussed. Employ of MSFIA systems coupled to molecular spectrophotometry, atomic spectrometry and hyphenation with other techniques are presented.