Χαμογελαστά δασκάλου και μαθητή κάνοντας πείραμα σε χημικό εργαστήριο - Φωτογραφίες & Εικόνες Αρχείου

Beautiful young scientist holding flasks with reagents and smiling at camera

Smiling teacher and student making experiment in chemical laboratory

Female scientist looking at test tube

Smiling teacher and student making experiment in chemical laboratory

Team of scientists working with liquids in laboratory

Adult scientist and excited girl in goggles mixing reagents in tubes in laboratory

Laboratory Practices

Smiling professional scientist in protective glasses making experiment in lab

Caucasian smiling chemist in uniform working in lab and looking at tube with reagent in chemical lab

Professional scientist in protective eyeglasses making experiment with reagents in test tubes

Smiling chemist in white coat holding test tubes with reagents and making experiment

Smiling chemist in white coat holding test tubes with reagents and making experiment

Professional scientist in protective eyeglasses making experiment with reagents in test tubes

Smiling chemist in protective eyeglasses holding test tube with reagent in lab

Portrait of scientist in protective gloves and glasses sitting at workplace in laboratory

Caucasian smiling chemist in white coat working with microscope and reagents while in chemical lab

Portrait of smiling scientist using microscope while working with reagents in lab

Smiling mature scientists working together with computer mouse and keyboard in lab