Un spécialiste de laboratoire environnemental en combinaison de protection prélève un échantillon de sol du fond de la rivière avec une pince à épiler pour la recherche, gros plan - Photo & image de stock

Hands of a laboratory assistant in rubber gloves take a soil sample on the river

Close-up of the hands of the scientist in protective gloves, collect materials with tweezers from the water in a Petri dish, for the sample

Lab worker in protective suit takes water from a river for further analysis

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 specialists hands in protective clothing hold a plant sample from the bottom of the river and does an express analysis for the presence of harmful

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

Hands in a protective suit and blue rubber gloves take a sample of algae near the river with tweezers for examination in the laboratory

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 holes in his hands a stand with test tubes in which reagents and test materials against the background of the river, top view

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

Scientist in yellow protective vest, uniform and gloves, collects materials from water, tweezers Petri dish

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

Scientist in a protective suit and gloves, collects water from the river into test tubes, for testing, there is a place for inscription

A scientist in a protective suit and mask, takes a sample of liquid from the reservoir into test tubes

A man in a protective suit and gloves draws water from a stream using a pipette and a flask, close-up

Scientist in a protective suit, collects a sample of water in a flask with a blue liquid, close-up, there is a place for the inscription