KONTES 897240-0000 Nmr Tubes Diam Caps

( Brand: Kontes ), ( Manufacturer Part Number: 897240-0000 ), ( Part Type: Tube Cap )

Review KONTES Nmr Tubes 5mm Diam Caps Assorted Colors 100

The **Kontes 897240-0000 NMR Tubes with Diamagnetic Caps** represent a high-performance solution for nuclear magnetic resonance (NMR) spectroscopy, engineered to deliver precision, reliability, and ease of use in demanding analytical environments. These tubes are meticulously crafted from high-quality borosilicate glass, specifically formulated to withstand the thermal and chemical stresses inherent in NMR experiments, ensuring long-term durability and consistent performance across a wide range of applications. The cylindrical design adheres to standard NMR tube dimensions, providing optimal signal-to-noise ratios and uniform magnetic field distribution, which are critical for accurate spectral interpretation. The **diamagnetic caps**, made from a specialized polymer blend, offer superior sealing properties while minimizing interference with the magnetic field, thus preventing sample evaporation and contamination without introducing extraneous signals. These caps feature a secure, leak-proof fit, reducing the risk of spills or cross-contamination in multi-sample workflows, and their ergonomic design allows for effortless handling and insertion into NMR probes. Whether used in routine qualitative analysis, quantitative measurements, or advanced structural elucidation, these tubes are compatible with both continuous-wave and Fourier-transform NMR spectrometers, accommodating a broad spectrum of solvents and sample types, from organic compounds to biomolecules. Their transparency enables visual inspection of sample clarity and volume, while the smooth, non-porous surface facilitates easy cleaning and sterilization, making them ideal for laboratories adhering to strict hygiene protocols. Overall, the Kontes 897240-0000 NMR Tubes with Diamagnetic Caps exemplify a blend of engineering excellence and scientific rigor, serving as an indispensable tool for researchers seeking uncompromising accuracy and efficiency in their NMR-based investigations.

**Pros and Cons of Buying Kontes 897240-0000 NMR Tubes with Diameter Caps**

1. **High Quality and Durability** Kontes is a well-established brand known for producing high-quality laboratory glassware. These NMR tubes are designed to withstand repeated use, high temperatures, and pressure, ensuring long-term reliability in nuclear magnetic resonance (NMR) spectroscopy applications.

2. **Precision and Consistency** The tubes are manufactured to tight tolerances, ensuring uniform dimensions and minimal variation between samples. This consistency is critical for accurate NMR measurements, as slight differences in tube diameter or wall thickness can affect resonance frequencies and signal quality.

3. **Compatibility with Standard NMR Instruments** These tubes are designed to fit standard NMR probes, making them universally compatible with most NMR spectrometers. The diameter caps (typically 5 mm) are optimized for high-resolution NMR applications, including proton ( H) and carbon-13 ( C) spectroscopy.

4. **Chemical Resistance** Kontes NMR tubes are made from borosilicate glass, which resists most organic solvents, acids, and bases commonly used in NMR sample preparation. This makes them suitable for a wide range of chemical analyses without risking degradation or contamination.

5. **Easy Cleaning and Maintenance** The smooth glass surface and standard diameter allow for easy cleaning with solvents, detergents, or ultrasonic baths. The caps can be removed and replaced cleanly, reducing the risk of sample cross-contamination.

6. **Cost-Effective for High-Throughput Work** While the upfront cost may be higher than some disposable alternatives, the durability and reusability of Kontes tubes make them cost-effective for laboratories performing large volumes of NMR experiments.

7. **Standardized Sample Preparation** The uniform dimensions and caps facilitate reproducible sample loading and spinning behavior, which is essential for quantitative and qualitative NMR analysis.

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1. **Higher Initial Cost** Compared to disposable or lower-grade NMR tubes, Kontes tubes have a higher upfront purchase price. This can be a barrier for small laboratories or individual researchers on tight budgets.

2. **Potential for Breakage** Despite their durability, glass NMR tubes are fragile and can break if dropped or subjected to thermal shock (e.g., rapid heating or cooling). This risk requires careful handling and storage.

3. **Limited Flexibility in Size** These tubes are designed for specific diameters (commonly 5 mm), which may not suit all NMR applications. Larger or smaller tubes may be required for specialized experiments, necessitating additional purchases.

4. **Maintenance Requirements** Regular cleaning and inspection are necessary to prevent residue buildup or damage to the tubes and caps. Neglecting maintenance can lead to inaccurate results or tube failure over time.

5. **Compatibility Issues with Non-Standard Probes** While most standard NMR probes accommodate 5 mm tubes, some high-field or specialized probes may require custom or alternative tube sizes. Always verify compatibility before purchase.

6. **Environmental Considerations** Although reusable, the production and disposal of glass tubes contribute to environmental waste. Laboratories must balance the benefits of reusability with sustainable alternatives if possible.

7. **Potential for Contamination** If not cleaned thoroughly between uses, residual samples or solvents can contaminate subsequent experiments. This requires strict adherence to cleaning protocols.

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Kontes 897240-0000 NMR tubes with diameter caps are a high-quality, reliable choice for laboratories performing routine or high-precision NMR spectroscopy. Their durability, precision, and compatibility with standard instruments make them ideal for long-term use, especially in research or industrial settings where consistency and accuracy are paramount. However, the higher cost and risk of breakage may not be justified for low-volume or disposable-use applications. Laboratories should weigh the trade-offs between initial expense, long-term savings, and the specific demands of their work.

- Your laboratory performs frequent or high-precision NMR experiments requiring reusable, high-quality glassware.

- Budget constraints allow for the higher upfront cost, given the long-term savings from reusability.

- You prioritize consistency, chemical resistance, and compatibility with standard NMR probes.

- Your workflow involves very low-volume or one-time-use NMR experiments where disposable tubes would suffice.

- Budget limitations make the higher cost prohibitive, and alternative brands or sizes are equally suitable.

- You frequently handle samples that could damage glass tubes (e.g., highly abrasive or corrosive substances), in which case alternative materials (e.g., quartz or certain plastics) may be more appropriate.

For most academic or industrial NMR laboratories, Kontes tubes are a strong recommendation due to their proven performance and reliability. Always verify probe compatibility and cleaning protocols before use.

Details:

NMR tubes 5mm diam. Cat#, frequency 500 MHz, L camber concentrate 7 in. 6 m 13 Value NEW: $121. 2 Kontes NMR Tube Pressure Cap, Assorted 25 each, 5mm. Cat# K Value NEW: $17.46, Total $138.46 2 Kontes NMR Tube Pressure Cap, Assorted 25 each, 5mm.

part #: 8972400000 price

• $13.99

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• mpn: 897240-0000
• part type: Tube Cap

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