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Nuclear Magnetic Resonance (NMR) spectroscopy is a powerful analytical technique requiring high-quality consumables. The NMR lab tube, though seemingly simple, plays a crucial role in sample integrity and spectral accuracy. Selecting the appropriate tube ensures reliable data acquisition and optimal performance for your research or industrial applications.
Premium NMR Tubes: Our professional NMR spectroscopy tubes come with matching caps, specifically designed for NMR spectroscopy experiments and laboratory research; They are manufactured to strict quality standards to ensure reliable and consistent...
Standard Dimensions: These standard series NMR tubes feature a standard 5 mm diameter and 7-inch length, which is the universal size widely used in most NMR spectroscopy applications; This standard design ensures perfect compatibility with common NMR...
10 Tube Pack: Each package contains 10 high-quality 7 inch NMR tubes along with matching EVA caps, providing a sufficient and steady supply for your laboratory's daily research needs; The pack size is carefully designed to meet the usage demand of most...
Superior Quality: Our borosilicate NMR tubes are crafted from high-quality borosilicate glass, ensures strong durability for long-term use; They are designed and manufactured to meet industry standards for NMR spectroscopy, helping to ensure reliable...
High Quality: Our NMR tubes are made from high-quality borosilicate glass, which provides excellent chemical compatibility and durability. They are designed to meet or exceed industry standards for NMR spectroscopy.
Standard Size: Our NMR tubes have a 5 mm diameter and a 7" length, which is the standard size for most NMR applications. They are perfect for routine analysis and research.
Pack of 10: Each pack contains 10 NMR tubes with caps, providing a good supply for your laboratory research needs.
Versatile Applications: Our NMR tubes are widely used in various fields such as chemistry, biochemistry, pharmaceutical, and materials science. They can be used for NMR spectroscopy, solid-state NMR, and other NMR-related experiments.
Camber and concentricity values listed are the total indicator reading (tir)
Designed for routine use in most low to mid field nmr spectrometers
Borosilicate glass hose connecting units are used to connect to apparatus with GL14 or GL18 thread sizes. Complete connecting unit consists of connector - either straight or bent - and cap with hole in center. Limited 90-day warranty included. Scientists...
Premium Borosilicate Glass: Made of borosilicate 3.3 glass, which provides excellent chemical compatibility and durability. They are designed to meet or exceed industry standards for NMR spectroscopy
Complete Ready-to-Use Kit: Each package includes 5 NMR tubes and 5 matching caps
Ideal for Core Applications: Perfect for routine analysis, educational laboratories, and industrial quality control, delivering reliable performance for accurate NMR spectroscopy
Last update on 2026-10-15 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best NMR Lab Tubes
Understanding NMR Tube Specifications
NMR tubes are precision-engineered glass vessels designed to hold your sample within the magnetic field of an NMR spectrometer. Key specifications to consider include:
Size: Standard NMR tubes are 5mm in outer diameter, but other sizes like 3mm and 10mm are available for specific applications or sample volumes.
Length: Typical lengths range from 7 to 9 inches, influencing the sample volume and how it fits within the spectrometer's active region.
Wall Thickness: Thicker walls can offer greater mechanical strength and thermal insulation, which may be important for high-temperature or variable-temperature NMR experiments.
Glass Type: Borosilicate glass is standard due to its chemical inertness and thermal stability. Some specialized applications might benefit from quartz or other materials.
Material Quality and Tolerances
The quality of the glass and the manufacturing tolerances are paramount for NMR tubes. High-quality tubes exhibit:
Uniformity: Consistent wall thickness and straightness are vital for proper spinning in the spectrometer's air bearing and for minimizing field distortions.
Cleanliness: Tubes should be free from contaminants that could interfere with spectral analysis.
Annealing: Proper annealing reduces internal stresses in the glass, preventing breakage and ensuring dimensional stability.
Specialized NMR Tubes
Beyond standard tubes, several specialized options cater to specific needs:
Low-Volume Tubes: Designed for precious or limited sample amounts, often requiring specialized inserts or deuterated solvents.
High-Pressure Tubes: Constructed to withstand elevated pressures, suitable for reactions or studies under non-ambient conditions.
Variable Temperature (VT) Tubes: Engineered for precise temperature control, often featuring thicker walls and specific joint designs for gas flow.
Cryogenic Tubes: Used for experiments conducted at very low temperatures.
Handling and Maintenance
Proper care extends the life and performance of your NMR tubes:
Cleaning: Use appropriate solvents and cleaning agents to remove residue without scratching the glass. Avoid harsh abrasives.
Storage: Store tubes upright in dedicated racks to prevent damage and contamination.
Handling: Always handle with care, especially when inserting or removing them from the spectrometer.
Frequently Asked Questions
What is the standard size for an NMR tube?
The most common size for NMR tubes is 5mm in outer diameter. This size is compatible with the vast majority of NMR spectrometers and accessories available on the market.
How does the wall thickness affect performance?
Thicker walls generally provide greater mechanical strength and better thermal insulation. This is particularly beneficial for variable temperature experiments where precise temperature control is crucial.
Can I use a standard NMR tube for high-pressure experiments?
No, standard NMR tubes are not designed to withstand high pressures. For such applications, specialized high-pressure NMR tubes made from robust materials are required.
What is the importance of tube straightness?
Tube straightness is critical for proper spinning within the spectrometer's magnetic field. An uneven tube can cause sample wobbling, leading to distorted spectra and reduced resolution.
How should I clean NMR tubes?
Clean NMR tubes with appropriate solvents and gentle cleaning tools to avoid scratching the glass. Thorough rinsing and drying are essential to prevent contamination of subsequent samples.
Are there specific tubes for small sample volumes?
Yes, specialized low-volume tubes are available for experiments where sample quantity is limited. These often require specific inserts or techniques to ensure optimal performance.
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