Uno specialista di laboratorio ambientale in una tuta protettiva e una maschera in una grondaia versa un reagente da una fiaschetta in acqua per studiare il livello di inquinamento - Foto e immagini stock

Close-up, the terrorist in a protective suit and gloves, pours liquid with poison, for infection, in a drainpipe

A man in a protective suit and mask in a large sewer pours reagent from a flask for wastewater treatment

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

Laboratory worker in protective suit and breathing apparatus crawls out of the pipe

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

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

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

Worker in a suit with protection from polluted environment measures radiation with a special device

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 and mask holds a flask of green liquid in his hands and shows his thumb up on the background of sewage pipes coming out from the factory

The workers hands in white gloves, carry a cart, on the repair section of the road

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

Scientist researcher in protective suit records environmental research after an emergency

Specialist in a protective suit reports by phone on the results of an environmental study, rear view

A positive reaction of the test results, a man in protective clothing, shows a good hand in a blue glove, against the background of drainpipes

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

A man in a protective suit and mask holds in his hands a flask with a blue liquid on the background of a large sewage pipe

Scientist in a protective suit and mask, collects mold treatment facilities to study the parameters of water in a Petri dish