A computerized, qualitative analysis system has been constructed. All subroutines are available in Fortran-IV coding and should run on any machine which uses this language. The present tape library includes primarily reactor produced isotopes, but the method can be extended for use with charged particles and high energy neutrons. The library cards are coded for the type of reaction which produces the isotope. The computer times need not be excessive since only the appropriate library need be put on tape. Alternatively, with a composite library, the program can be set to utilize only the appropriately coded isotopes.