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Water samples from drains in industrial areas
A scientist collects and examines water samples in test tubes near a factory drainage outlet
Scientists collected water samples from drains for testing.
Quality control officer with inspection kit
A scientist collects and examines water samples in test tubes near a factory drainage outlet
Wastewater inspectors are feeling tired
A scientist wearing a white protective suit collects and examines water samples
Coastal scientists with test tubes to test for contaminants
