For any who is interested; Aerosol vapor mist is a simple new way to visually find leaks proven to speed the process of leak location and repair. Aerosol vapor mist offers a convenient low-pressure way to test systems that have been repaired to confirm that all leaks have been found and properly dealt with. This method eliminates the waste of hundreds of thousands of gallons of water each year. Aerosol vapor mist is a special non-toxic formulation of oil that when heated to the right temperature vaporizes into a thick dense white smoke and pumped at low pressure into pipe systems to visually locate leaks as small as a human hair. Aerosol Vapor Mist provides three reliable ways to test for and locate leaks: 1) citrus scent that immediately confirms the presence of a leak in its immediate area, 2) Visible Vapor or smoke that provides a quick visual confirmation of where in the area any leak is located, and 3) special UV dye that marks the exact location of any leaks at the point smoke is found escaping from them. Smoke generated by the special vapor-producing machine is pumped into the system being tested at an automatically regulated pressure of 5 PSI. This pressure is specifically designed to force the smoke through the system being tested at a rate that allows it to move slow enough to collect in the air near leaks, but at a pressure high enough to cause the dye to settle out of the smoke around the exit of the leak. The machine cannot be adjusted to operate at any pressure other than 5 PSI, which also serves as a reliable pressure leak down test to confirm all needed repairs in the system have been found. It would be inappropriate to promote the manufacturer who brought this to my attention so I wont. But I didnt want to miss the opportunity to share this new concept. Be aware that the UPC does not permit air pressure testing in systems using plastic pipe. However, Ive spoken to building officials in a few other states that adopt the UPC and that prohibition is amended out of their local adoption of the UPC. You need to check with your local AHJ. Do yourself and your company a favor, do an internet search for Aerosol Vapor Mist test equipment.