MODEL RELEASED. Drinking water testing. Petri dishes containing samples of water from an aquifer that supplies drinking water. The water is to be tested for the presence of coliform bacteria. The prescence of this type of bacteria indicates that the water has been contaminated by faecal matter | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Rapson, Paul |
Bildgröße: | 3413 px × 5120 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |