Let’s Dive into Nalge Nunc Acrylic Burets, Class B, Polymethylpentene Stopcock, NALGENE 3650-0050
The Nalge Nunc Acrylic Burets, Class B, Polymethylpentene Stopcock, NALGENE 3650-0050 from Thermo Fisher Scientific (under the Nalge Nunc brand) promises reliability and dependability for laboratory applications. These burets offer a clear, break-resistant alternative to traditional glass burets, crucial in environments where safety and durability are paramount. With a focus on industrial, field, and general lab use, its design caters to professionals requiring accuracy and longevity in their equipment.
My journey to finding the Nalge Nunc Acrylic Burets, Class B, Polymethylpentene Stopcock, NALGENE 3650-0050 stemmed from a persistent issue with breakage and maintenance in our field testing labs. Glass burets were a constant source of downtime and potential hazards, especially when working with students and in mobile testing setups. I needed a reliable, accurate, and durable alternative that could withstand the rigors of daily use without the fragility of glass.
Upon unboxing, the immediate impression was of solid construction. The acrylic body felt noticeably robust, yet surprisingly lightweight, a definite advantage over cumbersome glass alternatives. The polymethylpentene stopcock appeared well-machined and promised a leak-proof operation, a critical factor for precise titrations.
Compared to similar products, such as glass burets with Teflon stopcocks, or even other plastic burets with less chemically resistant materials, the Nalge Nunc stood out. The Nalge Nunc’s resistance to a wide pH range (excluding hydrofluoric acid and ammonium hydroxide) was a significant selling point. The Nalge Nunc‘s combination of clear acrylic and chemically resistant stopcock materials appeared to offer the best balance of visibility, durability, and accuracy for our needs.
My initial impression was one of cautious optimism. The build quality seemed excellent, and the promised durability was encouraging, but the proof would be in the performance, particularly regarding accuracy and the long-term reliability of the stopcock mechanism.
Real-World Testing: Putting Nalge Nunc Acrylic Burets, Class B, Polymethylpentene Stopcock, NALGENE 3650-0050 to the Test
First Use Experience
I first tested the Nalge Nunc Acrylic Burets, Class B, Polymethylpentene Stopcock, NALGENE 3650-0050 in our environmental science lab, specifically for alkalinity titrations in water samples collected from local streams. This application involved repeated use throughout the day, handling a variety of water samples with varying levels of turbidity and chemical composition. The Nalge Nunc Acrylic Burets, Class B, Polymethylpentene Stopcock, NALGENE 3650-0050 was used on a daily basis, performing titrations using NaOH as the titrant.
The buret performed admirably in varying conditions, though extreme temperature changes were avoided. The buret experienced a wide variety of lab conditions ranging from 60-80 degrees fahrenheit, and remained accurate. The clear acrylic body allowed for easy reading of the meniscus, and the 0.10 mL graduations were sufficiently precise for our analysis.
The stopcock required minimal adjustment and provided a consistent, drip-free flow, which was a major improvement over our older glass burets. There was a slight learning curve in getting used to the different “feel” of the plastic stopcock compared to glass, but it was quickly overcome. The ease of use was immediately apparent.
The only initial issue was a slight static cling, causing some droplets to adhere to the inner wall of the buret. This was easily mitigated by wiping the inside with an anti-static cloth before use.
Extended Use & Reliability
After several months of near-daily use, the Nalge Nunc Acrylic Burets, Class B, Polymethylpentene Stopcock, NALGENE 3650-0050 has held up exceptionally well. There are no visible signs of cracking or crazing in the acrylic body, and the graduations remain clear and legible.
The stopcock continues to operate smoothly and without leaks, demonstrating the durability of the polymethylpentene material. The Nalge Nunc Acrylic Burets, Class B, Polymethylpentene Stopcock, NALGENE 3650-0050 has proven to be quite durable, withstanding typical lab usage without any problems.
Maintenance is simple, requiring only rinsing with distilled water after each use and occasional cleaning with a mild detergent. The Nalge Nunc Acrylic Burets, Class B, Polymethylpentene Stopcock, NALGENE 3650-0050 definitely outperforms the glass burets that it has replaced in terms of durability and ease of maintenance. The accuracy is also on par with the previous glass burets.
Breaking Down the Features of Nalge Nunc Acrylic Burets, Class B, Polymethylpentene Stopcock, NALGENE 3650-0050
Specifications
- Capacity: 50 mL – The 50 mL capacity is standard for many titration applications and provides a good balance between volume and precision. This capacity suits general lab work without excessive refills.
- Graduations: 0.10 mL – The 0.10 mL graduations allow for reasonably accurate dispensing, sufficient for Class B accuracy requirements. This graduation size is standard for many titration applications.
- Tolerance: ±0.10 mL – This tolerance meets ASTM E287 Class B standards, making it suitable for general laboratory use where high precision is not absolutely critical. This level of tolerance is industry standard.
- Length: 723 mm – The length contributes to the overall stability of the buret and allows for a comfortable reading height. Taller burets can provide a more precise reading due to the expanded scale.
- Material: Acrylic Body, Polymethylpentene Stopcock – Acrylic provides good clarity and break resistance, while polymethylpentene offers chemical resistance for the stopcock. This combination is designed for durability and compatibility with a range of chemicals.
- Stopcock Plug: Teflon TFE – The Teflon TFE plug ensures a leak-proof seal and smooth operation of the stopcock. Teflon‘s inertness also prevents contamination of the dispensed liquid.
Performance & Functionality
The Nalge Nunc Acrylic Burets, Class B, Polymethylpentene Stopcock, NALGENE 3650-0050 performs its job reliably and accurately within its Class B specifications. The consistent flow from the stopcock and clear graduations contribute to accurate dispensing.
Its strengths lie in its durability, ease of use, and resistance to breakage. The main weakness is its limitation regarding use with alcohol or organic solvents, and its unsuitability for hydrofluoric acid or ammonium hydroxide.
The Nalge Nunc Acrylic Burets, Class B, Polymethylpentene Stopcock, NALGENE 3650-0050 meets expectations for a Class B buret. It has proven to be more durable and easier to maintain than glass burets, making it a valuable addition to our lab.
Design & Ergonomics
The Nalge Nunc Acrylic Burets, Class B, Polymethylpentene Stopcock, NALGENE 3650-0050 features a simple, functional design. The acrylic body is lightweight and easy to handle, and the stopcock is conveniently placed for precise control.
The buret is relatively user-friendly, with a minimal learning curve. The main adjustment is getting used to the feel of the plastic stopcock.
Durability & Maintenance
Given the rugged acrylic construction, the Nalge Nunc Acrylic Burets, Class B, Polymethylpentene Stopcock, NALGENE 3650-0050 should last for many years with proper care. Routine cleaning is essential to prevent contamination and maintain accuracy.
The buret is easy to disassemble and clean. Replacement stopcocks and plugs are available from Nalge Nunc, extending the lifespan of the instrument.
Accessories and Customization Options
The Nalge Nunc Acrylic Burets, Class B, Polymethylpentene Stopcock, NALGENE 3650-0050 comes complete with the acrylic body, polymethylpentene stopcock and tip, and Teflon TFE plug. There are no included accessories.
While not strictly “customization,” replacement stopcocks and Teflon plugs can be purchased to extend the life of the buret. The buret is compatible with standard buret stands.
Pros and Cons of Nalge Nunc Acrylic Burets, Class B, Polymethylpentene Stopcock, NALGENE 3650-0050
Pros
- Exceptional Durability: Acrylic construction resists breakage, making it ideal for demanding environments.
- Chemical Resistance: Polymethylpentene stopcock and Teflon plug offer broad compatibility with many lab chemicals (excluding specific exceptions).
- Accurate Dispensing: Precise graduations and a well-designed stopcock provide reliable and accurate titrations.
- Easy to Maintain: Simple disassembly and cleaning contribute to long-term usability.
- Clear Visibility: The clear acrylic body allows for easy reading of the meniscus.
Cons
- Limited Solvent Compatibility: Not suitable for use with alcohol or organic solvents.
- Class B Accuracy: Not appropriate for applications requiring extremely high precision (Class A).
Who Should Buy Nalge Nunc Acrylic Burets, Class B, Polymethylpentene Stopcock, NALGENE 3650-0050?
Perfect for: General chemistry labs, environmental science programs, industrial quality control labs, field testing applications, and educational institutions. Anyone who needs a durable and reliable buret, but doesn’t require the highest level of accuracy.
Who should skip this product? Analytical chemists requiring Class A precision, or labs working extensively with organic solvents or strong bases such as ammonium hydroxide or hydrofluoric acid.
Must-have accessories or modifications? A good quality buret stand is essential for stability.
Conclusion on Nalge Nunc Acrylic Burets, Class B, Polymethylpentene Stopcock, NALGENE 3650-0050
The Nalge Nunc Acrylic Burets, Class B, Polymethylpentene Stopcock, NALGENE 3650-0050 is a solid investment for any lab seeking a durable and reliable alternative to glass burets. Its chemical resistance and ease of maintenance make it a practical choice for a wide range of applications.
The price is justified by its long-term durability and reduced risk of breakage compared to glass alternatives. The initial static cling was easily remedied and is a minor nuisance.
I would definitely recommend the Nalge Nunc Acrylic Burets, Class B, Polymethylpentene Stopcock, NALGENE 3650-0050 to any lab needing a dependable, accurate, and durable buret for general lab use. If you’re tired of constantly replacing broken glass burets, this is the solution you’ve been waiting for!