Ключевые слова: 3d, acid, acidic, acidity, alkaline, analysis, background, balance, base, chart, chemical, chemistry, color, colorful, design, earth, equipment, experiment, food, health, icon, illustration, indicator, isolated, lab, laboratory, liquid, litmus, measure, measurement, medical, medicine, meter, minimal, minimalism, neutral, ph, purple, render, rendering, scale, science, scientific, soil, solution, strip, test, value, water, yellow,