The scientist, in a protective suit and gloves, takes the liquid from the river in test tubes, for a sample - Stock Photo & Image

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

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

Close-up of a Petri dish with a sample of plants from a river into which a reagent for express research is poured from a test tube in the hands of a researcher

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

Scientist in a protective suit and mask, releases into the pond bio plants for reproduction from a Petri dish

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

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 holds a Petri dish with a sample for plants and looks at the reaction in it after adding the reagent

A man in a protective suit stands in a river and pours water from a test tube into it with a reagent to analyze the level of pollution

A man in a protective suit takes soil samples into a Petri dish from treatment facilities, close-up

Hand of a laboratory assistant in a rubber glove holds a test tube with water taken for analysis

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

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 and mask performs an express test for water pollution from a river

Laboratory assistant in a protective suit and mask performs an express analysis at the site of contamination of the reservoir

A man in a protective suit holds a test tube in his hands with a green reagent for conducting water analysis against the background of the river

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

Environmental specialist in a protective suit and mask took a sample of wastewater water to study the level of pollution