TESUCO Leak Detection Spray 

• Leak detection spray providing precise application, aiding in the fast detection of refrigerant leaks.
• Tests hermetic sealing of any refrigerant system.
• Special formulation inhibits corrosion when used on copper, brass and steel.
• Reacts to even the slightest leak, forming bubbles or foam.
  
  Find out more at http://www.tesuco.com.au/blog/2013-12/product-launch-gas-control-leak-detection-spray