Wilmad 3 mm OD Economy NMR Tubes are recommended for small organic molecule experiments (Molecular Weight <500). The OD spread of Wilmad 3 mm Economy tube is only 0.03 mm, which is at least 30% better than other competitors’ products. This tightest tolerance in the industry makes every Wilmad Economy tube perfect fitting into the NMR spinner turbine guaranteed. Wilmad Economy NMR Tubes are manufactured from borosilicate glass that meets the ASTM Type 1 Class B standard. The paramagnetic Fe2O3 is controlled within 1200 ppm, which is 50% better than industry average, to minimize the impact on shimming quality. Wilmad Economy NMR Tubes has a wall thickness of 0.43 mm, compared to 0.38 mm wall in other competitors’ Economy tubes. This thicker wall yields 30% more robustness and makes Wilmad Economy NMR Tube ideal in automation and student training applications. Scientists rely on the expertise and artistic skills of Wilmad-LabGlass engineers and glass specialists to manufacture NMR and EPR consumables and laboratory glassware of the highest quality. Used daily in academia, healthcare and chemical, petroleum and other industrial applications, Wilmad offers 7000+ items as part of their standard catalog as well as custom fabrication for individual glassware, glass repair services and OEM glass parts.