PYREX® 5mm Superior NMR Sample Tubes 8 Inch Length for 300–500MHz Spectrometers – 6980B-8

The PYREX® 5mm Superior NMR Sample Tubes are precision-manufactured borosilicate glass tubes designed for nuclear magnetic resonance (NMR) spectroscopy using instruments operating between 300MHz and 500MHz. Manufactured by Corning using precision-bore glass tubing technology, these 8-inch tubes feature tightly controlled concentricity and straightness for consistent sample positioning and reliable spectral analysis. They are suitable for pharmaceutical research, organic chemistry, molecular structure determination, analytical laboratories, and scientific research institutions. Key Features & Specifications - 5mm Nominal Diameter: Standard tube size for compatible NMR spectrometers. - 8 Inch Length: Approximately 203.2mm, providing additional length compared with the 7-inch version. - 300–500MHz Frequency Range: Designed for compatible NMR instruments within this range. - Superior Quality Grade: Precision-manufactured for demanding spectroscopy applications. - PYREX® Borosilicate Glass: Offers chemical resistance to compatible laboratory solvents. - 4.97mm Outer Diameter: Precision-controlled external dimensions. - 4.20mm Inner Diameter: Provides a consistent internal sample chamber. - 0.0005 Inch Concentricity TIR: Approximately 12.7µm maximum. - 0.0006 Inch Camber TIR: Approximately 15.24µm maximum. - Precision-Bore Manufacturing: Helps maintain uniform tube geometry. - Clear Ungraduated Glass: Suitable for visual inspection and NMR sample preparation. - Manufacturer Packaging: Five tubes per pack and case. Specification Details Brand PYREX® Manufacturer Corning Product Number 6980B-8 Supplier Reference 401491 Product Type NMR Sample Tube Quality Grade Superior Material Borosilicate Glass Nominal Diameter 5mm Outer Diameter 4.97mm Outer Diameter Tolerance +0.000 / −0.013mm Inner Diameter 4.20mm Inner Diameter Tolerance +0.013 / −0.000mm Tube Length 8 inches (203.2mm) NMR Frequency Range 300–500MHz Concentricity TIR 0.0005 inch (12.7µm) Camber TIR 0.0006 inch (15.24µm) Manufacturing Method Precision-Bore Glass Tubing Graduated No Appearance Clear / Transparent Quantity per Pack 5 Tubes Quantity per Case 5 Tubes