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| navigate by keyword : bright chemical chemistry children closeup colorful cyclohexanol cylinder cylinders density dye dyed equipment ethanol ether fun glass happiness homogeneous laboratory liquid measuring mixture phase physical properties reagent science test tube water |
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| The photograph of three layered liquids in a test tube. |
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Stockphotos.ro (c) 2025. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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