This is, of course, subject to the class of materials involved, leakage, and other factors. Tests have shown significant suppression effects up to an around 60 cubic meters. More units would be required for a larger volume or spaces with excessive leakage. The aerosol flows and spread rapidly throughout the volume rapidly, in a manner similar to gas. However, since the aerosol is buoyant, more is required In a high ceiling situation. The DSPA-5 is most effective when thrown directly at or near the fire.