5 mm Thin Wall Precision Quartz NMR Sample Tube 9 L, 600MHz

Wilmad Precision NMR Quartz Tubes have an extremely low thermal expansion rate and high tensile strength which is 14 times more robust during the cooling/heating process than Type 1 Class A glass tubes. Naturally occurring quartz maintains an over 85% transmission rate (10 mm thickness, with consideration of reflection loss) above 265nm that makes quartz tubes preferable in photochemistry studies Half the dielectric constant of Pyrex® glass helps improve the quality factor • Low Boron density at or below 0.1 ppm guarantees a clean background in Boron-11 NMR studies Tight ID and OD tolerance as small as 0.0065mm accommodates Wilmad inserts To maximize SNR, Precision NMR Quartz Tubes have minimal paramagnetic impurities that would impact shimming Manufactured in a state-of-the-art ISO 9001:2008 USA facility using a unique precision shrinking and grinding process to shape the inner surface with maximized filling factor Ideal for variable temperature experiments that have a temperature step over 120°C as well as experiments at temperatures up to 1300°C Inner surface is resistant to strong acid and base at ambient temperature 100% inspection with multiple NIST traceable gauges and optical surface defect checks Includes disposable cap Note: Caps are not recommended for use with samples dissolved in chloroform-d or acetone-d6.