Isotopic fractionation of gallium by more than 10% has been reported when a continuous electrical current is passed through a capillary column containing the metal. Recent work in this laboratory has demonstrated gallium isotopic fractionation approaching 1% with ion exchange chromatography. Since commercially available high-purity gallium is generally purified by multiple recrystallization steps, the possibility exists for isotopic fractionation during the recrystallization, and thus variations among lots and manufacturers depending upon the exact treatment of the material. To determine if isotopic variations exist in commercially available gallium, 16 samples of high-purity gallium metal were analyzed using thermal ionization mass spectrometry. 13 references, 2 tables.