PYREX® 5mm Superior NMR Sample Tubes 7 Inch Length for 300–500MHz Spectrometers – 6980B-7

The PYREX® 5mm Superior NMR Sample Tubes are precision laboratory glass tubes designed for nuclear magnetic resonance (NMR) spectroscopy using instruments operating at 300–500MHz. Manufactured from high-quality PYREX® borosilicate glass using precision-bore manufacturing techniques, these tubes feature carefully controlled concentricity and straightness for reliable sample positioning during NMR analysis. Suitable for pharmaceutical research, organic chemistry, molecular structure determination, analytical laboratories, and scientific research institutions. Key Features & Specifications - 5mm Nominal Diameter: Standard NMR sample tube size. - 7 Inch Length: Approximately 177.8mm. - 300–500MHz Compatibility: Designed for NMR spectrometers within this operating frequency range. - Superior Quality Grade: Precision-manufactured for analytical spectroscopy applications. - PYREX® Borosilicate Glass: Provides chemical resistance for compatible solvents and samples. - 4.97mm Nominal Outer Diameter: Precision-controlled external dimensions. - 4.20mm Nominal Inner Diameter: Designed for NMR sample containment. - Concentricity TIR: Maximum 0.0005 inch (approximately 0.0127mm). - Camber TIR: Maximum 0.0005 inch (approximately 0.0127mm). - Precision-Bore Construction: Supports uniform tube geometry and sample positioning. - Ungraded Surface: No volumetric graduation markings. - Manufacturer Packaging: Five tubes per pack and case. Specification Details Brand PYREX® Manufacturer Corning Product Number 6980B-7 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 7 inches (177.8mm) NMR Frequency Range 300–500MHz Concentricity TIR 0.0005 inch (12.7µm) Camber TIR 0.0005 inch (12.7µm) Manufacturing Process Precision-Bore Glass Tubing Graduated No Appearance Clear / Transparent Quantity per Pack 5 Tubes Quantity per Case 5 Tubes