Ключевые слова: analysis, analytic, applied, background, blue, chemical, chemistry, conical, cylinder, demonstration, development, dropper, education, equipment, experiment, flask, fluid, fuel, glass, glassware, glove, green, hand, isolated, laboratory equipment, liquid, measure, measuring, method, mixture, pharmacy, pink, rack, rainbow, reaction, red, research, safety, sample, science, study, test, tube, university, white, yellow,