Trabajador de laboratorio en un traje de protección llegó a las aguas residuales y añade reactivos para el tratamiento del agua - Foto e imagen de stock

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

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

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

The hand of a terrorist in protective gloves, pours the liquid with the poison to infect the drain pipe

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

Close-up, the terrorist in a protective suit and gloves, pours liquid with poison, for infection, in a drainpipe

The workers hands in white gloves, carry a cart, on the repair section of the road

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

A man in a protective suit and mask performs an express test for water pollution from a river

Scientist in a protective suit and mask, holding a set of test tubes with water samples treatment facilities, on the background of water, on the right there is a place for the inscription

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 mask holds a flask of green liquid in his hands and shows his thumb up on the background of sewage pipes coming out from the factory

A man in a protective suit and mask in a large sewer took a sample of water for analysis

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

An environmental laboratory specialist in a protective suit and mask holds a case with a mobile laboratory in his hands and goes to the epicenter of the flow of chemicals

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

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