Uśmiechnięty młody naukowiec trzymając kolbę odczynnik chemiczny - Zdjęcie stockowe & obraz

Pensive male scientist holding flask with chemical reagent

Young male scientist in protective glasses making experiment in laboratory

Enthusiastic scientist. Happy positive delighted man wearing protective glasses and smiling while working with chemical reagents

Man in the lab testing new cleaning solution detergent

Male researcher holding a test tube with liquid

Closeup. chemist holding a beaker with a solution .photo with copy space

Chemical experiment. Serious handsome man looking at the flask with liquid while conducting chemical experiment

Young scientist in goggles working with test tubes in laboratory

Close-up view of bearded chemist in protective goggles inspecting test tube in lab

Close-up view of young bearded chemist in white coat inspecting test tube in lab

Female scientist in protective glasses and mask holding flask with reagent in laboratory

Close-up view of concentrated young scientist in eyeglasses holding test tube with reagent in chemical laboratory

Young bearded chemist in white coat examining test tube in laboratory

Young female scientists in protective goggles looking at glass microscope slide in lab

Young woman chemist in protective goggles making experiment in laboratory

African american scientist in lab coat with microscope and digital tablet working in chemical lab, scientists group behind