Γυναίκα χημικός που μελετά την παρουσία ιζημάτων σε φιάλη με κόκκινο υγρό στο εργαστήριο - Φωτογραφίες & Εικόνες Αρχείου

Chemistry student mixing liquids in scientific laboratory, conducting experiment

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

Chemistry student dripping liquid in test tube conducting experiment in lab

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

Female scientist comparing flasks with colored liquid, detergent laboratory

Female chemist observing reaction holding test tube in hand, experimentation

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

Boy in protective gloves and glasses studying sediments in flask with red liquid

Schoolboy conducting chemical researches and writing reaction result, innovation

Schoolboy watching reaction in tube with green liquid, chemistry lessons

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

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