Primo piano, il terrorista in una tuta protettiva e guanti, versa liquido con veleno, per infezione, in un tubo di scarico - Foto e immagini stock

An environmental laboratory specialist in a protective suit and a mask in a gutter pours a reagent from a flask into water to study the level of pollution

A man in a protective suit and mask crawls out of the sewer after research

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

A man in a protective suit and mask in a large sewer pours reagent from a flask for wastewater treatment

Laboratory worker in protective suit and breathing apparatus crawls out of the pipe

Man in protective suit and mask crawls out of the sewer after research, front view

Scientist in protective clothing, with a suitcase goes into the drain pipe to take samples

A man in a protective suit and mask looks away holding a flask with express test

Scientist in protective clothing, with a suitcase out of the drain pipe, which took a sample for testing

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 of a man in a protective suit and mask holding a test tube and a pipette with test water on the river after an outdoor 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

Environmental laboratory specialist came to the object in a protective suit and mask in his hands holding a briefcase with equipment and reagents

A man in a protective suit takes soil samples into a Petri dish from the sewage treatment plant

A man in a protective suit and a respirator against bacteria and viruses sits by the river next to a mobile laboratory for research

Environmental biologist in a protective suit and mask examines water from the river for viruses

An environmental laboratory specialist in a protective suit and mask stands in the water and measures the level of pollution with the device

Environmental laboratory specialist in protective suit and mask in a gutter pours water into a flask to study the level of pollution, close-up

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