3g grey smoke cartridges with easy to use finger grip base. Supplied in a re-sealable plastic pack. Used for airflow testing of chimneys and flues. 3gm pellet - about 45 second burn time, 8 m3 of smoke.

 

• Smoke duration 45 seconds
• 2.5m³ approx. of dense smoke
• Non toxic and oil free
• Complies with BS5440-1