Replacement magnet for INOVA 300 NMR spectrometer

属于UNB化学系INOVA 300核磁共振光谱仪的原始磁铁无法修复。我们考虑了这个磁铁的三种替代方案；即一个新的瓦里安/磁磁体；翻新的牛津仪器长期磁铁；和翻新的瓦里安/牛津ALOX磁铁。后一种选择代表了最具成本效益的解决方案，并将允许我们将300 MHz仪器重新投入急需的使用。在其磁体消亡之前，300 MHz光谱仪是所有研究生，博士后研究员和许多本科生（大约50名研究人员）使用的主要步行仪器。在磁铁失效之前，这台仪器是全天候使用的；我们目前依靠老化的1992年老式400 MHz UNITY仪器进行所有核磁共振波谱。

The original magnet belonging to the INOVA 300 NMR spectrometer in the Department of Chemistry at UNB is beyond repair. We have considered three replacement options for this magnet; viz. a new Varian/Magnex magnet; a refurbished Oxford Instruments long-hold magnet; and a refurbished Varian/Oxford ALOX magnet. The latter option represents the most cost-effective solution, and will permit us to bring the 300 MHz instrument back into much-needed use. Prior to the demise of its magnet, the 300 MHz spectrometer was the primary walk-up instrument used by all graduate students, post-doctoral fellows and many undergraduates (approximately 50 researchers). This instrument was used around the clock prior to the failure of the magnet; we are currently relying on an ageing 1992 vintage 400 MHz UNITY instrument for all NMR spectroscopy carried out in the Department.