50.0 MB (4.1 MB compressed)
5107 x 3425 pixels
43.2 x 29.0 cm ⏐ 17.0 x 11.4 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 to various household solutions: vinegar (acidic), water (neutral), baking soda (alkaline) and ammonia (alkaline).
Model release not required. Property release not required.