Potassium bicarbonate & Urea Elaborate (AKA Monnex), utilised on course B and C fires. Simpler than all other powders due to its capacity to decrepitate (wherever the powder breaks up into smaller sized particles) while in the flame zone creating a greater surface area space free of charge radical inhibition. https://juliusuogzp.thenerdsblog.com/34344307/the-greatest-guide-to-gas-fire-suppression-system