Colour spreading on litmus paper which is placed on top of glass of water

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Size: 2468px × 3032px
Location:
Photo credit: © Dorling Kindersley: Dave King / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: background, close, close-, color, colour, education, experiment, glass, litmus, object, paper, plain, science, shot, single, spreading, studio, top, vertical, water, white