Wilmad 305-PS-8 Precision 3 mm NMR Sample Tube, 200 MHz, 8 L (Pack of 5)"

Wilmad is adopting a unique precision shrinking and grinding process to shape the inner surface and outer surface. This process brought a highly reproducible (within 5%) filling factor and 100% fit to the spinner turbine. Each of individual Wilmad NMR tubes released into the market has passed multiple NIST traceable gauge control and optical surface defect checks. Four ultrasonic washing cycles guarantee each Wilmad tube is free of any trace of contamination for NMR spectroscopy. Wilmad Precision NMR Tubes are manufactured from ASTM E438 Type 1 Class A glass, which has 3 fold less paramagnetic contamination comparing to the Economy tube glass, and can be operated safely at temperature up to 230 ËšC, and within a temperature step of 120 ËšC. Precision tube is rated as hydrolytic class 1, which states that the inner surface is resistant to strong acid and base at ambient temperature. 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.