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Hands are examining the quality of wastewater treatment systems to control chemicals before releasing water into the environment. Check for contaminants in water sources. Water and ecology concept.

Close-up of female biologist's hand collecting tap water in beaker for testing water sample.

universal indicator paper, Litmus Paper of ph Value Measurement, laboratory inspection equipment

pharmaceutical and medical subjects

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

Female ecologist examines the dirty water in test tube, protective face mask

Hand of unrecognizable scientist is experimenting with chemicals in front of white background. Hand is holding laboratory flask with liquid in it.

Test tube with clean sea water in a hand on a sea background during ecological test

The hand of a black male high school student in chemistry lab holding a flask containing a blue liquid.

blue science experiment bottle,Bottle of water in the hand of a scientist by dropping liquid into a test tube

Water samples were collected in industrial canals for inspection

Young female chemist in formal wear conducting scientific experiment using chemicals in a laboratory.

Inspector holding a chemical flask with river water. Water testing for infections.

A woman is doing a lab test

research glassware and scientist hand holding a pipette on white background

Scientist is experimenting with chemicals.

A beaker collects the milked green pit viper venom for produce snake antidote serum

Close up of researcher male's hand in lab coat and green protective glove using micropipette and transferring yellow solution from Erlenmeyer flask into test tube in advance chemical laboratory. Pharmaceutical and scientific research.

Science experiment Acid-base reaction titration in Laboratory.

An environmental engineer or researcher taking a water sample from a river

Beaker with liquid on a white background, laboratory analytical equipment

Scientist holding a green liquid. Studio shot with 2 strobes.

examination of water quality in a natural reservoir. a test tube in a man's hand with water to check its purity.

Beaker, Biology, Blue, Chemistry, Conical Flask

A captivating macro photo captures a scientist examining a tick specimen inside an alcohol-filled beaker glass, showcasing meticulous laboratory research

Young woman in lab wear conducting scientific experiment using chemicals and laboratory equipment.

hand scientist wearing rubber gloves and hold beakers isolated on white background and coppy space, Chemical laboratory glassware and Science concept

Abstract of woman hand pick up cube of ice in to glass water with light and shadow on white table background. Tooth sensitive ice cause of pain.

Scientist with gloves takes samples in pond. Water pollution in rivers and lakes concept

Close up shot of unrecognizable female scientist stirring a red liquid in a beaker and analyzing it's behaviour while doing experiments and research at the laboratory.

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