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.
A scientist examines water samples in test tubes near a factory drainage outlet
A scientist collects and examines water samples in test tubes near a factory drainage outlet
Quality control officer with inspection kit
A scientist collects and examines water samples in test tubes near a factory drainage outlet
Scientists collect water samples from drains
A scientist wearing a white protective suit collects and examines water samples
Scientists test water quality
A scientist wearing a white protective suit examines water samples
Quality control officer with inspection kit
Coastal scientists with test tubes to test for contaminants
