Assist in the preparation of samples, solutions, reagents and others to be used as instructed. Carry out the assembly and disassembly of simple laboratory equipment, under guidance. Transport, prepare, clean, sterilize materials, instruments and devices, as well as disinfect utensils, sinks, countertops and others. Carry out control and ensure the preservation of samples, materials, equipment and others, as per guidance. Pack and label materials, as determined. Receive, label, catalog all samples that arrive at the laboratories (rocks, minerals, ores, stream sediments, water, etc.). Assist in carrying out chemical, physical-chemical and parasitological tests. Weigh, mix and filter materials, under guidance. Control the stock of glassware and consumables necessary for the laboratory. Carry out control and ensure the preservation of samples, materials, equipment and others, as per guidance.