Flue flow, flue pull, chimney integrity etc are all very important when it comes to removing products of combustion, and most importantly Carbon Monoxide from boilers, gas fires and chimneys etc. These smoke matches burn for 20 seconds and give off approximately 2m³ of non acidic smoke which will indicate any signs of spillage or compromised integrity. Carrying out smoke tests is a requirement of the Gas Safety Regulations.
• Box of 12 matches.
• 20 second burn time of non toxic great smoke.
• Produces approximately 2m³ of oil free smoke.
