Ένας άντρας με προστατευτική στολή και μάσκα σε ένα μεγάλο υπόνομο πήρε ένα δείγμα νερού για ανάλυση. - Φωτογραφίες & Εικόνες Αρχείου

Scientist in protective clothing, with a suitcase out of the drain pipe, which took a sample for testing, close-up

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

A man in a protective suit and mask looks away holding a flask with express test

Scientist in protective clothing, with a suitcase goes into the drain pipe to take samples

A man in a protective suit and mask crawls out of the sewer after research

Scientist in protective clothing, with a suitcase out of the drain pipe, which took a sample for testing

The scientist, in a protective suit, mask and gloves, took the liquid from the river, for a sample and checks its color, in the light, against the drainpipe

Man in protective suit and mask crawls out of the sewer after research, front view

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

Laboratory worker in a protective suit came to the sewage and adds reagents for water treatment

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 mold treatment facilities to study the parameters of water in a Petri dish

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

A man in a protective suit and mask holds in his hands a flask with green liquid on the background of sewage pipes coming out from the factory

The hand of a terrorist in protective gloves, pours the liquid with the poison to infect the drain pipe

Scientist researcher in protective suit records environmental research after an emergency

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

A man in a protective suit and mask holds a suitcase with equipment and a tablet in his hands to record research results