49.6 MB (3.5 MB compressed)
3390 x 5112 pixels
28.7 x 43.2 cm ⏐ 11.3 x 17.0 in (300dpi)
GIPHOTOSTOCK / SCIENCE PHOTO LIBRARY GIPHOTOSTOCK / SCIENCE PHOTO LIBRARY
Red cabbage juice indicator. Red cabbage juice changes its colour depending on the pH of the solution. Here red cabbage juice was added to a plastic cup containing an acidic solution (vinegar).
Model release not required. Property release not required.