The DSPA’s compound is the most effective fire extinguishing agent currently available. Many times more effective than conventional agents like powder or foam. The DSPA-5 contains the same compound used in our UL/ULC tested fixed fire extinguishing units. However, due to the tremendous variability of conditions in a firefighting situation, the purpose of the DSPA-5 is, first and foremost, for use as an extremely effective tool to suppress and limit the growth of fires until other traditional methods are available to put out the fire, any extinguishment is a bonus.