Foto de stock - 21 August 2018, Germany, Düsseldorf: In the laboratory of the laboratory ship ""Max Prüss"" of the State Agency for Nature, Environment and Consumer Protection (LANUV), measuring instruments that continuously measure the pH value, conductivity and oxygen content of water are used. The ship was the first inland vessel in North Rhine-Westphalia to be retrofitted with an exhaust gas purification system. Photo: Christophe Gateau/dpa. - Düsseldorf/North Rhine-Westphalia/Germany

Imagen: 21 August 2018, Germany, Düsseldorf: In the laboratory of the laboratory ship ""Max Prüss"" of the State Agency for Nature.

Criterios de búsqueda

Selecciona varios criterios