The High Precision NMR tubes are manufactured with high accuracy and excellent straightness and concentricity. They are particularly suitable for quantitative measurements and measurements in spectrometers with high measurement frequencies above 600 MHz up to the highest available field strengths above 1 GHz. The tubes are made of borosilicate glass 3.3, which complies with USP Type I and ASTM E438, Type I, Class A requirements. NMR tubes are supplied without caps, please order caps separately. | 