How can a chlorine leak be detected?

Detecting a chlorine leak can effectively be accomplished by applying ammonia vapor. When chlorine gas comes into contact with ammonia, it forms a white cloud of ammonium chloride, which is a visible indicator of the presence of chlorine. This method leverages the chemical reaction that occurs between chlorine and ammonia, making it a quick and practical approach to identifying chlorine leaks.

Other methods, while useful in various contexts, do not directly facilitate the detection of chlorine leaks. For instance, using a moisture meter would measure the moisture content of materials and would not provide any information related to chlorine gas presence. Measuring air pressure is important for understanding various physical conditions but does not indicate the presence of specific gases like chlorine. Monitoring pH levels can be relevant in certain water quality assessments, yet it does not directly correlate with the detection of chlorine leaks.