Three bio technicians testing for pollutants in a river in woodland wearing full hazard suits and masks as they take water samples
More tags biohazard, contamination, men, protection, samples, sampling, suits, team, toxic, water, contaminants, nature, pollution, clothing, checking, river, stream, poison, hazard, industrial, spill, testing, scientists, technicians, pollutants, ecological, environment, bio, analysing, woodland, masks, chemical, industry, monitoring, pathogens