Kémiai hallgató csöpögő folyadék kémcsőbe vezető kísérlet labor - Stock fotó és kép

Chemistry student mixing liquids in scientific laboratory, conducting experiment

Female chemist looking at colored liquids in flasks, developing new substance

Woman scientist holding pipette with liquid and taking test tube with reagent

Female chemist observing reaction holding test tube in hand, experimentation

Female chemist studying presence of sediments in flask with red liquid in lab

Female scientist comparing flasks with colored liquid, detergent laboratory

Schoolboy watching reaction in tube with green liquid, chemistry lessons

Little chemist in protective glasses checking reaction in tube with green liquid

Schoolboy conducting chemical researches and writing reaction result, innovation

Boy in protective gloves and glasses writing down chemical experiments results

Schoolboy looking at chemical substance in test tube, chemistry lesson, hobby

Boy in protective glasses pouring chemical substance in tube, checking reaction