Potassium bicarbonate & Urea Sophisticated (AKA Monnex), utilised on course B and C fires. More practical than all other powders because of its capability to decrepitate (exactly where the powder breaks up into smaller particles) while in the flame zone creating a larger sized floor location without spending a dime https://johnnyvdfjk.bcbloggers.com/28341212/5-essential-elements-for-fire-equipment