  We present a combined treatment of quantum-gravity-induced effects and
intrinsic CPT violation in entangled neutral-Kaon states. Our analysis takes
into consideration two types of effects: first, those associated with the loss
of particle-antiparticle identity, as a result of the ill-defined nature of the
CPT operator, and second, effects due to the non-unitary evolution of the Kaons
in the space-time foam. By studying a variety of phi-factory observables,
involving identical as well as general final states, we derive analytical
expressions, to leading order in the associated CPT violating parameters, for
double-decay rates and their time-integrated counterparts. Our analysis shows
that the various types of the aforementioned effects may be disentangled
through judicious combinations of appropriate observables in a phi factory.
