A drain testing kit is a set of tools used to check the integrity and functionality of drainage systems, ensuring they are free from leaks, blockages, and other issues. These kits typically include a variety of equipment, such as inflatable test plugs, pressure gauges, and flow meters, that help assess the condition of drains, pipes, and sewers. Drain testing is commonly performed during construction, renovation, or maintenance projects to ensure that the drainage system meets legal standards and is working correctly. The testing kit allows for both water and air pressure tests, providing a reliable method for detecting leaks or weaknesses in the system.