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A water pollution sample in the test tube close up.
Testing water with a water parameter meter, such as pH, conductivity, Ta, redox and oxygen.
Mid Adult Biologist Measuring PH Value of Water on Field Directly in Water Stream
Female biochemist or infectious disease specialist conducts a chemical test of water against the background of a sewer with leaking water
Nature, science and a woman with water for research, test for pollution and bacteria. Biology, sustainability and a scientist looking at a sample from a river for ecology inspection and analytics
Examination of Polluted Water from river
Mature woman collected river water sample for analysis in a test tube and recorded the experimental results in the tablet. Environmental research.
Sample water from the river for analysis. Hand in glove holding a test tube
Blue Pond is a tourist destination in Hokkaido.\nIt was bluer than I expected.
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
Water samples were collected in industrial canals for inspection
Two men photographing the waterfall Salto De Prago in rain forest in Faial da Terra, Sao Miguel island in Azores
Young girl explorer
Bacterial control of pool water. Checking the amount of algae, harmful substances and chemicals. Laboratory study of water from artificial reservoirs. Taking liquid into a test tube. Water sample.
the scientist, in a protective suit and mask, writes down the results of the sample from the river in a notebook, next to a mobile phone and test tubes with liquids
Caucasian ginger haired Caucasian woman photographer in squatting position, takes photos on the lake bank in a sunny winter park. Profile view
Biologist that collects data on temperature of a water course for the analysis of its pollution and for the study of its features.
Testing the quality of water in the industrial estate's drainage sources by biologists using experimental kits.
A person in a lab coat is holding two beakers with clear liquids
Shot of a young male traveler photographer with casual wear looking at lake scenery with camera and taking beautiful spectacular photos during summer day.
Female geologist using a magnifying glass examines nature, analyzing rocks or pebbles. Researchers collect samples of biological materials. Environmental and ecology research.
A male photographer standing on a mossy rock with waterfalls around and a lush green tree background.
Environmental Engineers Take Water Samples Into Bottles at Rotten Smelly Pond Water Sources, May Be Contaminated by Toxic Waste or Suspicious Pollution Sites.
Man standing on the hill and looking on beautiful view on caminito del ray river
Female Environment Researcher Examining Presence of Algae in Squatting Position near a Frozen Mountain Lake
Environmental Scientist Examining Wastewater from factory at industrial estate
chlorine solution in glass, Chlorine is used to kill bacteria or to perform experiment in laboratory
Mature blonde woman taking photos of fern and rocks in the forest of Bushkill Falls in Poconos Mountains, Pennsylvania. Close up
field researcher biologist examines a sample of soil in a test tube against a dry marsh
Teen takes in the gorgeous scenery at Jordan Pond in Acadia National Park, Maine. The pond covers 187 acres with a shoreline of 3.6 miles. The clear water of the pond provides drinking water for the residents in the surrounding area.
Free Images: "bestof:Photograph of Sig Olson Testing the Temperature of the Water - NARA - 2128749.jpg Scope and content Original caption Sig Olson is shown testing the temperature"
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