PYREX® 5mm Deluxe NMR Sample Tubes 7 Inch Length for 200–400MHz Spectrometers – 6980D-7

The PYREX® 5mm Deluxe NMR Sample Tubes are precision-manufactured borosilicate glass tubes designed for nuclear magnetic resonance (NMR) spectroscopy using compatible instruments operating between 200MHz and 400MHz. Manufactured by Corning using precision-bore glass tubing techniques, these 7-inch tubes feature controlled concentricity and straightness to support reliable sample positioning during spectroscopic analysis. Suitable for pharmaceutical research, organic chemistry, molecular structure determination, analytical chemistry laboratories, and scientific research institutions. Key Features & Specifications - 5mm Nominal Diameter: Standard sample tube diameter for compatible NMR spectrometers. - 7 Inch Length: Approximately 177.8mm. - 200–400MHz Compatibility: Designed for NMR spectroscopy within the specified frequency range. - Deluxe Quality Grade: Precision-manufactured for routine and advanced analytical applications. - PYREX® Borosilicate Glass: Provides chemical resistance to compatible laboratory solvents. - 4.97mm Outer Diameter: Precisely controlled external tube dimensions. - 4.20mm Inner Diameter: Consistent internal bore for liquid sample containment. - Outer Diameter Tolerance: +0.000 / −0.013mm. - Inner Diameter Tolerance: +0.013 / −0.000mm. - Concentricity TIR: Maximum 0.002 inch (50.8µm). - Camber TIR: Maximum 0.0005 inch (12.7µm). - Precision-Bore Construction: Supports consistent tube geometry for NMR analysis. - Clear Glass Construction: Allows visual inspection of samples. - Manufacturer Packaging: Five tubes per pack and case Specification Details Brand PYREX® Manufacturer Corning Product Number 6980D-7 Supplier Reference 401491 Product Type NMR Sample Tube Quality Grade Deluxe 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 7 inches (177.8mm) NMR Frequency Range 200–400MHz Concentricity TIR 0.002 inch (50.8µm) Camber TIR 0.0005 inch (12.7µm) Manufacturing Method Precision-Bore Glass Tubing Appearance Clear / Transparent Manufacturer Quantity per Pack 5 Tubes Manufacturer Quantity per Case 5 Tubes