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Dry Chemical Fire Extinguishers

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Monoammonium phosphate – also called ABC or multi-purpose fire extinguishers, monoammonium phosphate extinguishers are capable of extinguishing Class A, B, and C fires. You can read more about multi-purpose fire extinguishers here.

Sodium bicarbonate – one of the most common dry chemical fire extinguishing materials, sodium bicarbonate (baking soda) can be used on class B and C fires and was the first dry chemical agent ever developed. The way sodium bicarbonate works is by heating up and releasing a cloud of carbon dioxide that smothers the fire, depriving it of oxygen and breaking the chemical reaction required for the fire to sustain itself. It is not suitable for Class A fires because it does not reduce heat from the fire, meaning it does not prevent burning materials from reflashing.

Potassium bicarbonate(Purple-K) – Purple-K is used to put out Class B and C fires. With twice the extinguishing effectiveness of sodium bicarbonate, Purple-K is preferred by the oil and gas industry and is the only dry chemical agent certified for use in ARFF (Aircraft Rescue and Fire Fighting).

Click here to read more about installing fire extinguishers in Maryland»

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