Soil pH meter in a plant pot. A pH meter shows the alkalinity or acidity of a substance. Farmers and gardeners use these meters to assess a soil's suitability for different plants. A probe placed in the soil measures the amount of free hydrogen ions present,giving a value on the pH scale. A pH of 7 is neutral,above 7 is alkali and below 7 is acid. This meter displays a pH of just below 7,meaning that this is a mildly acid soil | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Trevor Clifford Photography |
Bildgröße: | 3425 px × 5117 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |