The P100 Powder Cloud System creates viewable clouds of highly micronized Borozin powder for studying low-velocity airflow. A high-quality rubber squeeze bulb gives a burst of air through the bottom of the P200 Powder Bottle. Quickly squeeze the bulb one or more times to create a cloud of appropriate size and density to conduct your airflow studies. Perfect for determining wind direction or directional flow and velocity of air from HVAC systems, clean rooms, hospital isolation rooms and more. Our proprietary formulation of highly micronized, white Borozin Powder (Zinc Stearate) carries on air just like smoke. It offers high visibility, great hang time and virtually no residue. Eco-friendly, non-toxic, odorless, noncorrosive. The P100 Powder Cloud System comes with carry case, instruction, one squeeze bulb and one powder bottle that will provide hundreds of puffs of dense white clouds for your air flow tests. P200 Replacement powder bottles are sold separately.