Kéz, védőkesztyűben, mintát vesz a vízből egy kémcsőben lévő folyadékból - Stock fotó és kép

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

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

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 water sample from the river. Hand in glove collects water in a test tube. ecology concept

Hands scientist, in a protective suit and gloves, holding a tube of water for the sample

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

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

Hand of a laboratory assistant in a rubber glove holds a test tube with water taken for 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, side view against the background of the 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 Petri dish with a sample for plants and looks at the reaction in it after adding the reagent

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

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

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

A man in a protective suit holds a petri dish with a sample for research and took off his glasses to look forward

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

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