A lithium-drift germanium γ-ray spectrometer can resolve and measure separately the activities of six elements mixed together in multi-element detectors. The activators and main resonance energies were 115In (1.4 eV), 197Au (4.9 eV), 75As (47 eV), 198Pt (96 eV), 98Mo (467 eV), and 68Zn (514 eV). The detectors were made by loading the six elements into epoxy resin. The results showed that good uniformity had been obtained and gave reduced resonance integrals for 68Zn [0.40 ± 0.06b (for 69mZn formation), 75As (58.8 ± 3.4b), 98Mo (6.3 ± 0.8b), and 198Pt (50 ± 6b).