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  • To be used with Smoke Pen
  • Straight, pencil-thin smoke pattern allows you to locate draughts and leaks and gauge their strength
  • Each stick/wick provides 30 minutes of continuous smoke or about 60 individual 30-second tests
  • Ideal for air balancing, verifying ventilation systems and testing smoke alarms.
  • Ideal for air verifying negative or positive air pressure