Scienziato in tuta protettiva chimica con fiaschetta conica che preleva campioni dal fiume per l'analisi - Foto e immagini stock

Male scientist in protective suit and mask holding fish by tweezers near river

Water inspector in protective costume and respirator taking water samples at river

Full length view of water inspector in protective costume and respirator holding test tubes and flask at river

Scientist in chemical protective suit with conical flask taking sample from river for analysis

Water inspector in protective costume and respirator taking water sample at river

Partial view of water inspector in respirator and goggles taking water sample

Scientist in chemical protective suit with florence flask taking sample from river for analysis

Female scientist in protective mask and suit writing in clipboard while her colleague putting sample of water

Water inspector in protective costume and respirator with inspection kit sitting at river coast

Scientist with florence flask taking sample from river for analysis, closeup

Scientist with test tube taking sample from river for analysis, closeup

Scientist in chemical protective suit with florence flask taking sample from river for analysis, closeup

Scientist in chemical protective suit with conical flask taking sample from river for analysis, closeup

Scientist with test tube taking sample from river for analysis, closeup

Laboratory worker with Petri dish taking sample from pink lake for analysis, closeup

Scientists in chemical protective suits writing formula on glass board at laboratory. Virus research

Man wearing protective suit with insecticide sprayer on blue background, space for text. Pest control