Fire extinguisher powder - consisting of mixture of potassium bicarbonate and calcium or magnesium carbonate

摘要

Fire extinguisher powder consists of a mixt. of 20-80 esp 40-60 wt % potassium bicarbonate and 80-20 esp 60-40 wt % calcium and/or magnesium carbonate. Better extinguishing effect than potassium bicarbonate by itself. Cheap pdt.