Particle System - Emitter lifetime

I cannot find answer to my question so i decided to ask you there. How to unloop any particle to get it work like a P_Explosion from starting templates? For example i want to set lifetime of P_Sparks to 0.5 seconds. Simply I want to shut down all emitters inside particle after this period of time.

just put them loop 1 time only and they wont keep looping.