four vials showing color change over time
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Stockphotos.ro (c) 2026. All stock photos are provided by Dreamstime and are copyrighted by their respective owners.
four vials showing color change over time |
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| navigate by keyword : vial bottle liquid color change time experiment science research development aging degradation oxidation reaction process progression stages comparison analysis laboratory sample test chemical substance fluid transparent glass clear dark yellow orange brown black |
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| Four glass vials are lined up against a white background. Each vial contains a liquid that changes color over time, indicated by labels on the front: "0 HOURS," "100 HOURS," "200 HOURS," and "300 HOURS." The liquid progresses from a pale yellow to a deep, dark brown or black, illustrating a process of change or degradation over a 300-hour period |
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Stockphotos.ro (c) 2026. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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