Ecologist sampling water from the river with test tube
Dedicated scientist collecting water sample from polluted river to monitor environmental impact
Two biologist in biohazard suits and masks sampling water from a stream or river pipetting a sample into a test tube for chemical analysis of pollutants
Two men in biohazard suits and masks sampling water from a stream or river pipetting a sample into a test tube for chemical analysis of pollutants
Two biologist in biohazard suits and masks sampling water from a stream or river pipetting a sample into a test tube for chemical analysis of pollutants
Ecologist sampling water from the river with test tube and save data to laptop computer
Ecologist sampling water from the river with test tube and save data to laptop computer
Ecologist sampling water from the river with test tube and save data to laptop computer
Ecologist sampling water from river with test tube glass and have white smoke
Two scientists in full biohazard suits and masks taking water samples from a river to check for hazardous pollutants or contaminants. River is red and dirty
Three bio technicians testing for pollutants in a river in woodland wearing full hazard suits and masks as they take water samples
Three bio technicians testing for pollutants in a river in woodland wearing full hazard suits and masks as they take water samples