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

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 scientists in full biohazard masks with breathing apparatus working together in a chemical laboratory with hazardous samples conducting tests in a low angle view across a rack of text tubes

Two scientists in full biohazard masks with breathing apparatus working together in a chemical laboratory with hazardous samples conducting tests in a low angle view across a rack of text tubes

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

Three bio technicians testing for pollutants in a river in woodland wearing full hazard suits and masks as they take water samples

Three men in biohazard suits and masks standing on a bridge over a stream preparing to sample the water for contaminants

Two biologist in biohazard suits and masks discuss results of test of water from red dirty river

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

Chemical transfer of chemical that was diluted in test tube into cuvette by auto pipette for testing

A pipette dropping sample into a test tube in lab