Concentrated middle-aged scientist examines the chemical liquid in the flask sitting at the table in lab
Woman examining flasks with different liquids
Laboratory assistant examines green leaf in flask standing greenhouse on hydroponics.
Scientist or technologist doing a laboratory test. Concentrated, liquid. male chemist examines a flask with a blue substance. Holds a test tube in his hand and mixes the liquid inside
A laboratory technician conducts research in a science lab. Close-up shot.
Glass flask with liquid in scientist hands. Medical research in laboratory. Male doctor analyzing chemical reagent in flask. Clinician examining liquid at chemical flask. Lab worker looking at liquid