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Unique design icon of acidic rain pH scale vector indicator chart diagram acidic alkaline measure isolated on white background illustration. Infographic acid-base balance 10 eps Cute baby girl biting in a lemon Vector illustration of ph test pack isolated on a white background. Universal indicator papers for acidic and alkaline testing. Litmus paper testing kit. Ph strips to determine the ph. Ph scale chart indicator diagram value, alkaline, neutral, acidic solution pH alkaline and acidic scale background pH scale fluid drop acidic neutral and alkaline science education chemistry illustration Ripe green limes on a tree have an acidic taste and are very sour commonly used in sauce recipes due to their freshness and high vitamin C content Includes a copy space image Ph scale diagram, Ph scale graphic, Acid to base, pH scale Infographic acid-base balance, Indicator diagram acidic alkaline measure isolated on white background illustration, Universal pH indicator A detailed pattern of citrus fruits including lemons, oranges, and grapefruits, with leaves and flowers, high-resolution photo, realistic photo, hyper realistic A girl in a white T-shirt is eating a lemon, on a bright yellow background. Free space for text. Acids, neutral and bases substances scale with examples outline diagram. Labeled educational chemical PH values scheme with colored and numbered areas vector illustration. Hydrogen ion concentration.