Cobalt chloride is an amusing bleeding heart of pungency on account of it changes colour as it absorbs moisture. Strips of cobalt chloride test paper energy from dejected to pink as they soak up H2O from their environment or humid air. Provided you bear some cobalt chloride, you can advantage it to arrange criterion strips, then perform some clean science experiments or proof for leaks in pipes. Here's how it works.
1. Add some cobalt chloride to your 5 mL of soak and stir until it dissolves.
2. Wait until the paper is dry which might return a scarce hours. It will turn blue once it's dried out.5. Cut the paper into smaller strips to make it simpler to use.
Returns a lot of filter paper and soak it in the sense.3. Remove the filter paper and field it in the desiccator, which is basically honest a jar with some desiccant (a chemical that absorbs drool) inside.4.
6. Touch a strip of the paper to a surface you want to test. If the surface is moist, the paper will turn pink.
7. Alternatively, tape a strip of test paper to a surface you suspect is leaking or cracked and tape another strip of test paper somewhere else in the vicinity (this second test strip will serve as a control). If the test strip taped to the suspect surface quickly turns pink while your control strip remains blue, you can confirm that moisture is present.