MODEL RELEASED. Drinking water testing. Microbiologist dropping water onto a petri dish for laboratory analysis. The sample is from an aquifer that supplies drinking water. It is to be tested for the presence of coliform bacteria. The presence of this type of bacteria indicates that the water has been contaminated by faecal matter | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Rapson, Paul |
Bildgröße: | 5120 px × 3413 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |