  ISO and IUE spectra of the round planetary nebula Me 2-1 are combined with
visual spectra taken from the literature to obtain for the first time a
complete extinction-corrected spectrum. With this, the physico-chemical
characteristics of the nebula and its central star are determined by various
methods including photoionization modeling using Cloudy. The results of the
modeling are compared to those derived from a more classical, simple abundance
determination approach. A discussion is presented on the validity of the
different methods used and assumptions made. Finally, the main results are
interpreted in terms of the evolutionary stage of Me 2-1 and its central star.
