Anonymous person wearing protective suit holding test tube with liquid.
More tags person, test tube, analysis, chemistry, environment, biology, biochemistry, protection, suit, test, equipment, biotechnology, scientific, research, experiment, ecology, glassware, ecologist, uniform, clothing, gloves, occupation, environmental, biochemist, contamination, pollution, scientist, researching, development, observe, holding, showing, anonymous, unrecognizable, liquid, transparent, filtration, solution, toxic, bacteriology, soft focus, close-up, blur, horizontal, copy space