The cobalt chloride test for water. The blue cobalt chloride test paper is held over a test tube of water. It is important that the paper is stored in low humidity before the test since exposure to 55% relative humidity or greater is sufficient to cause a slow color change | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Chillmaid, Martyn F. |
Bildgröße: | 3840 px × 5760 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |