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Hand dripping pH indicator into test tube with visible color change in test fluid

Stock Photo:
Image ID: 65569540
Release Information: N/A
Copyright: Shawn Hempel
Small
334x500 4.6"x6.9" (72dpi) 94 KB
Med
667x1000 2.2"x3.3" (300dpi) 336 KB
Large
2489x3734 8.3"x12.4" (300dpi) 2.6 MB
Super
4978x7468 16.6"x24.9" (300dpi) approx.9.4 MB
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