Watervervuilingsconcept. Vrouwelijke wetenschapper neemt een watermonster van vervuilde vijver. - Stockfoto’s en -afbeeldingen

Water pollution concept. Woman scientist takes a water sample from polluted pond.

Water pollution concept. Woman scientist takes a water sample from polluted pond.

Chemist on river bank with test tube and water in hands

Ecologist in blue gloves with test tube in hands takes sample of water near lake shore

Laboratory assistant with bulb in hand on river bank in summer

Hand in glove collects water in a test tube.

A scientist in a protective suit and blue gloves, conducts a study on the ground, pours blue liquid from a test tube into a flask

Pond water pollution concept. Scientist takes samples of dirty water from a pond into a test tube.

Pond water pollution concept. Scientist takes samples of dirty water from a pond into a test tube.

Water pollution concept. Woman scientist takes a water sample from polluted pond.

Pond water pollution concept. Scientist takes samples of dirty water from a pond into a test tube.

Pond water pollution concept. Scientist takes samples of dirty water from a pond into a test tube.

Water pollution concept. Woman scientist takes a water sample from polluted pond.

Pond water pollution concept. Scientist takes samples of dirty water from a pond into a test tube.

Pond water pollution concept. Scientist takes samples of dirty water from a pond into a test tube.