Un jeune chimiste portant des lunettes et des gants de protection examine une solution chimique bleue dans une fiole dans un laboratoire de recherche. - Photo & image de stock

A close-up portrait of a chemist wearing safety glasses and protective gloves, holding a flask of blue liquid. Scientist in the lab.

A young chemist scientist working in a laboratory. A chemist synthesizes a substance. A scientist examines a blue chemical solution in a flask.

A scientist studies a chemical substance in a flask in a research laboratory. Chemist. Virologist. Microbiologist.

Young male researcher carrying out scientific research in a lab

Young scientist observing liquid reagent in laboratory

Female chemist in a white coat and safety glasses with a chemical flask in her hands on a white background. Flask with purple solution. Chemical experiments.

A chemistry teacher conducts a demonstration experiment with copper sulfate for his students in the school laboratory. Chemistry lesson. .The process of teaching chemistry students.

A female chemist examines the contents in a test tube. Work in a modern scientific laboratory.

Close-up of a female doctor wearing protective glasses and gloves taking a sample from a test tube for further analysis of the covid test. Covid test in the lab

A young beautiful woman chemist conducts a scientific study of a yellow solution in the laboratory. Chemist in the lab in a Bathrobe and goggles with a solution in a flask.

Portrait of a scientist in close-up, with a test tube in his hands between chemical flasks with colored solutions.

A school chemistry teacher in a school laboratory shows an experiment for his students. Chemistry at school. The teaching of chemistry

A female Chemist with a test tube and flasks in the laboratory. The chemist studies the blue solution in a test tube.