PYREX® 5mm Deluxe Plus NMR Sample Tubes 7 Inch Length for 250–400MHz Spectrometers – 6980C-7

The PYREX® 5mm Deluxe Plus NMR Sample Tubes are precision-manufactured borosilicate glass tubes designed for nuclear magnetic resonance (NMR) spectroscopy using compatible instruments operating between 250MHz and 400MHz. Manufactured by Corning using precision-bore tubing technology, these 7-inch tubes feature controlled concentricity and straightness to support consistent sample positioning and reliable spectroscopic analysis. Suitable for pharmaceutical research, organic chemistry, molecular structure determination, analytical laboratories, and scientific research institutions. Key Features & Specifications - 5mm Nominal Diameter: Standard sample tube size for compatible NMR spectrometers. - 7 Inch Length: Approximately 177.8mm. - 250–400MHz Compatibility: Designed for NMR spectroscopy within the specified frequency range. - Deluxe Plus Quality Grade: Precision-manufactured for analytical laboratory applications. - PYREX® Borosilicate Glass: Provides chemical resistance to compatible laboratory solvents. - 4.97mm Outer Diameter: Precisely controlled external dimensions. - 4.20mm Inner Diameter: Consistent internal bore for containing liquid samples. - Concentricity TIR: Maximum 0.0010 inch (25.4µm). - Camber TIR: Maximum 0.0010 inch (25.4µm). - Precision-Bore Construction: Helps maintain uniform tube geometry. - Clear Glass Body: Allows easy visual inspection of samples. - Manufacturer Packaging: Five tubes per pack and case. Specification Details Brand PYREX® Manufacturer Corning Product Number 6980C-7 Supplier Reference 401491 Product Type NMR Sample Tube Quality Grade Deluxe Plus 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 250–400MHz Concentricity TIR 0.0010 inch (25.4µm) Camber TIR 0.0010 inch (25.4µm) Manufacturing Method Precision-Bore Glass Tubing Appearance Clear / Transparent Quantity per Pack 5 Tubes Quantity per Case 5 Tubes