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Sample water from the river for analysis. Hand in glove holding a test tube
environmentalist use a chemical flask to collect the  samples of toxic water for testing and check with quality of water from industrial
Environmental Engineers Team Take Water Samples at Natural Water Sources. Water that smells bad Near Farmland, Fish Ponds May Be Contaminated by Toxic Suspicious Pollution Sites.
Water sampling, Water quality checking
Water sample and purity analysis test, liquid in laboratory glassware testing for pollution, contamination, water quality control or plastic substance distribution
Scientist examing toxic water
Two scientists examined seawater and collected the sample in a test tube and recorded the experimental results in the tablet.
Scientists biological researcher taking a water sample
Environmental researchers investigate the condition of canal water for toxic spills, river waste water sampling, Asian researchers collect water samples in farmland for research and development.
Testing the quality of water in the industrial estate's drainage sources by biologists using experimental kits.
Inspector holding a chemical flask with river water. Water testing for infections.
View of irrigation ditch flowing along cultivated orchards in the district of Meliana in the Valencian Community, Spain
Close up of female environmentalist hands in glove collects water samples from a river to explore and testing for infections. Water and ecology concept
A scientist and researcher collects samples from various aquatic ecosystems with beakers and test tubes, enters the samples into a list and prepares it for research in the laboratory. A team working on remote field surveys of primeval water sources in the primeval forest. Sources of clean water and unpolluted water.
Close up view of ecologist sampling water from the river with test tube. Examining level of pollution. Conserve water and environment.
Female science teacher preparing an experiment in class laboratory. She is in her thirties and is from middle-east. This is part of a series promoting diversity and equity in STEM. Horizontal waist up indoors shot with copy space. Focus on the preparation. This was taken in Montreal, Quebec, Canada.
Water pollution concept. Woman scientist takes a water sample from polluted pond.
Close-up scientist hand with a white PPE suit and nitrile gloves collect sample waste water into a flask for laboratory water analysis, industrial and environmental concept
A biological laboratory worker took samples of river water for analysis using a test tube, close-up of a hand in a blue glove with a full test tube against the background of water
Examination of Polluted Water from river
Fence, check the water sample for infections. Gloved hand with flask and a test tube on a background of lake, river, sea. Pollution of ecology, environment
Algae Experiment in Controlled Environment.
Water channel for irrigation in the agricultural field
A young scientist conducting lab tests.
Scientist factory wearing protective uniform and glove under working water analysis and water quality by get waste water to check case in laboratory is environment pollution problem concept.
Female scientists wearing Chemical protective suites and PPE collect samples of toxic water to test by mobile lab test, examining wastewater from Industrial, and environment
A water pollution sample in the test tube close up.
Two colleagues working together outdoor in nature analysing water quality in river
Sample of water from a lake, river. Water sampling from a river.
Expert testing quality of water. Pollution concept.
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