Test tubes. Several test tubes in a rack with an increasing amount of colored liquid in consecutive tubes. Can be used to illustrate the concept of gr

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Test tubes. Several test tubes in a rack with an increasing amount of colored liquid in consecutive tubes. Can be used to illustrate the concept of growth.

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Photo credit: © GIPhotoStock RF / Alamy / Afripics
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Keywords: bar, biochemical, biological, biology, biomedical, biotechnology, chemical, chemistry, concept, conceptual, container, glassware, graph, growth, increase, industry, innovation, laboratory, life, liquid, profit, rack, research, science, solution, test, tube