Red cabbage
Videos
The red cabbage is a kind of cabbage, also known as Blaukraut after preparation. Its leaves are coloured dark red/purple. However, the plant changes its colour according to the pH value of the soil du
Red cabbage plant
Red cabbage in panorama between Finningen and Mörslingen, Germany
Red cabbage
Spiral arrangement of cabbage leaf stalks, horizontal section half
PH indicator
Videos
A pH indicator is a halochromic chemical compound added in small amounts to a solution so the pH of the solution can be determined visually or spectroscopically by changes in absorption and/or emissio
pH measurement with indicator paper
Hydrangea in acid soil
Hydrangea in alkaline soil
A gradient of red cabbage extract pH indicator from acidic solution on the left to basic on the right