Επιστήμονας με προστατευτική στολή και μάσκα, απελευθερώνει στη λίμνη βιολογικά φυτά για αναπαραγωγή από ένα τρυβλίο Petri - Φωτογραφίες & Εικόνες Αρχείου

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

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, collects materials from the pond in a Petri dish

The scientist, in a protective suit, mask and gloves, takes the liquid from the river in test tubes, for a sample

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

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

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 worker takes samples from the bottom of the lake

The scientist, in a protective suit and mask, took a plant with tweezers, for a sample and puts it in a Petri dish, close-up

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

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 takes soil samples into a Petri dish from the sewage treatment plant

A man in a protective suit and mask holds a test tube and a pipette with test water on the river after an accident

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

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

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

An environmental laboratory specialist in a protective suit and a mask in a gutter pours a reagent from a flask into water to study the level of pollution