A Smoke-Bottle is ideal for the required periodic checks of negative pressure for hospital isolation rooms, states the manufacturer. Each bottle contains a glass ampul containing titanium tetrachloride in a protective plastic shield. To activate the Smoke-Bottle, the user breaks the ampul in the bottle. The bottle will release a dense, white smoke when squeezed. Each bottle can be used for the next 24 hours or more after the ampul has been broken.
Regin HVAC Products, 273 Canal St., Ste. 222, Shelton, CT 06484; 203-922-0033 or 888-883-5332; 203-922-0158 (fax); www.regin.com.