Un científico con traje protector y máscara recoge una muestra de agua en un frasco con un líquido azul - Foto e imagen de stock

A man in a protective suit and mask holds a pipette of water from the river in his hands to pour into a test tube to study the quality of water

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

A man in a protective suit does an express test-tube test on the river bank

A specialist in a protective suit and respirator analyzes the water in the river near the existing plant, using a flask and a pipette

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

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

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

Specialist in a gray protective suit and mask, takes a sample of liquid in test tubes from the river, close-up

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

A man in a protective suit and a respirator in goggles holds in his hands a glass flask with test samples of soil in tweezers in the open air

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 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 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 conducts an express test of contaminated water to identify the level of danger to the environmental environment and living organisms

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

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

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