[Fire Extinguisher] Dry Chemical Powder Fire Extinguishers [Description] 
DRY CHEMICAL FIRE EXTINGUISHERS, also known as Class D extinguishers, are designed to tackle a unique industrial hazard. Fires involving burning metals such as aluminium, lithium, magnesium, potassium, sodium and their alloys require these specialist extinguishers to interrupt the chemical reaction and extinguish the fire.