Training course for young researchers in Gas chromatography-mass spectrometry was held on  August 27, 2020. Participants were master students along with researchers engaged at different projects ongoing at the Chemistry Department. Training was held by Nemanja Koljančić, MA in chemistry, one of the best graduated students of this department. At the moment, Koljančić is a PhD student of the Slovak University of Technology in Bratislava and he is able to transfer newly acquired knowledge. This way, the knowledge is being transfered from older students to their younger colleagues and also Alumni association of chemists is getting stronger. This training is important for experimental activities for a number of national projects that are active at the moment, especially for those in organic chemistry, polymer chemistry and environmental chemistry. This training is also part of the preparatory activities for the realization of the Erasmus+ K1 action between the two institutions which is approved and is starting from next academic year.