El científico, en un traje de protección y máscara, tomó una planta con pinzas, para una muestra y lo pone en una placa de Petri, primer plano - Foto e imagen de stock

Laboratory worker takes samples from a wood surface

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

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

The man checks the duration of the protection of the special suit in the conditions of pollution, putting it on

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 crouched in a protective suit to take a sample of a plant from water into a Petri dish for laboratory research

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

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

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

Close-up of a petri dish with a sample of soil for research in the hands of a laboratory worker, against the backdrop of the environment

An environmental laboratory specialist in a protective suit lids a glass container with a soil sample for research

A man in a protective suit and mask took a soil sample from the bottom of the river into a Petri dish

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

An environmental laboratory specialist in a protective suit takes a sample of soil from the river bottom with tweezers for research, close-up

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

A man in special protective clothing and a mask draws water from a river into a flask after discharges into the river, checking the river for environmental friendliness

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

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