Description: * Currently pursuing a higher education degree or technical course in Chemistry, Chemical Engineering, or related fields; * Knowledge of Office Suite; * Reside in Montenegro or surrounding regions. Assist in physicochemical analyses of tannin and its derivative samples in process, finished products, raw materials, general supplies, in the laboratory; Assist in physicochemical analyses of water from boilers, cooling towers, and water treatment and effluent plants, in the laboratory; Assist in operations for preparation and monitoring of synthesis of products obtained from the aqueous extract of Black Acacia bark during processing; Enter data and distribute spreadsheets, presentations, and documents related to the area; 2511210202471526798