What should be used to locate a chlorine gas leak?

The most effective way to locate a chlorine gas leak is by using ammonia solution vapor. When ammonia and chlorine gas mix, they react to form a visible white plume, making it easier to identify the presence and location of the leak. This reaction serves as a clear visual indicator, alerting operators to potential hazards and allowing them to take appropriate action.

Using a water mist, soap solution, or compressed air may not provide the same clarity or effectiveness in detecting chlorine gas. Water mist can disperse chlorine and may not reveal the leak accurately, while soap solution is more commonly used to check for leaks in non-toxic gases rather than in identifying chlorine leaks specifically. Compressed air is not a reliable method for locating gas leaks because it could potentially mask the presence of the chlorine gas rather than aiding in its detection. Thus, ammonia solution vapor stands out as the best choice for effectively locating a chlorine gas leak.