The Nu TIMS is a Thermal ionisation mass spectrometer (TIMS) designed for precise and accurate measurement of elemental isotopic ratios. It has been developed using our field-proven variable dispersion multicollector technology to improve the versatility and overall performance of this long established analytical technique. The instrument combines design advances in filament assembly, ion optics and electronics control with ease of use and high precision. The Nu TIMS utilises our unique, patented Zoom lens system to ensure perfect peak alignment without the requirement of moving detectors. The optional ion-counting mini Daly, capable of precise measurement of small samples and low abundance isotopes, provides the ultimate in stability, linearity and dynamic range.