Hand holding test tube with pH indicator comparing color to scale

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Size: 2508px × 3762px
Photo credit: © Shawn Hempel - Concepts / Alamy / Afripics
License: Royalty Free
Model Released: Yes

Keywords: alkaline, analysis, blue, checking, chemical, chemistry, chlorine, color, control, diagnosis, examination, fluid, glass, glove, hand, hold, kit, measure, measuring, neutral, paper, ph, reaction, research, scale, science, test, testing, tube, water