Phofo e ntšo e na le bokhoni bo ikhethang ba ho hotetsa ka har'a vacuum, e ikemetseng ho oksijene ea sepakapaka.
E ruile ka potassium nitrate, ho bola ha eona ho lokolla oksijene, eo ka nako eo e arabelang ka matla ka mashala a kentsoeng le sebabole. Karabelo ena e matla e hlahisa mocheso o moholo, khase ea naetrojene, le carbon dioxide, demonstrating the powder’s potent exothermic properties.