Un homme en combinaison de protection tient une boîte de Pétri avec un échantillon pour plantes et regarde la réaction en elle après avoir ajouté le réactif - Photo & image de stock

A man in a protective suit holds a Petri dish with a sample for plants and looks at the reaction in it after adding the reagent, top view

A man in a protective suit and mask holds a test tube and a pipette with test water on the river after an accident

A man in a protective suit holds a Petri dish with a sample for plants and looks at the reaction in it after adding the reagent, side view against the background of the river

Scientist in a protective suit and mask, collects biomaterials from the water, for analysis, in a Petri dish

A scientist, in a protective suit, mask and gloves, takes a liquid from the river in test tubes, for a sample, against the background of a drainpipe

Scientist in yellow protective vest and mask, uniform and gloves, closes the Petri dish, after collecting materials, close-up

Worker in a suit with protection from polluted environment measures radiation with a special device

Scientist in a protective suit and mask, collects materials from the pond in a Petri dish

Terrorist in a protective suit and gloves, pours liquid from a glass tube with poison, for infection, in reservoirs

A man in a protective suit and mask holds in his hands a flask with green liquid on the background of sewage pipes coming out from the factory

Laboratory assistant in a special protective suit in the open air measures the level of environmental pollution with the device

Laboratory worker in a protective suit came to the sewage and adds reagents for water treatment

Laboratory worker takes samples from the bottom of the lake

Scientist in a protective suit and mask, on the background of the drain pipe, looking at the collected mold treatment facilities, to study the parameters of water in a Petri dish, in the light

Scientist in a protective suit and gloves, pour blue liquid from a test tube into a flask, against the background of the river

Liquidator of the accident, in a protective suit and a yellow vest, looking at the reaction in a test tube, on the background of the pond

Scientist, in a protective suit and mask, collects water from the river for testing, in test tubes

A scientist in a protective suit and mask, takes a sample of liquid from the reservoir into test tubes