49.6 MB (4.8 MB compressed)
3396 x 5106 pixels
28.7 x 43.2 cm ⏐ 11.3 x 17.0 in (300dpi)
GIPHOTOSTOCK / SCIENCE PHOTO LIBRARY GIPHOTOSTOCK / SCIENCE PHOTO LIBRARY
Universal indicator changes its colour depending on the pH of the solution. Here universal indicator was added to a beaker containing an acidic solution (Lysol bathroom cleaner containing 2.5% citric acid).
Model release not required. Property release not required.