The Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case and What It Taught Me
The Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case represents a critical tool in quantitative chemical analysis. This particular model, known for its precision and automated features, is a staple in laboratories worldwide, including many I’ve consulted with over the years. Its self-zeroing capability and three-way PTFE stopcock promise efficiency and accuracy, cornerstones of any successful titration or dispensing process.
My journey with burets began in a rather crude environment, far removed from the sterile confines of a modern lab. I was tasked with field-testing water samples for alkalinity using makeshift equipment. The experience highlighted the importance of accurate measurement, even in austere conditions, sparking my appreciation for precise lab equipment like the Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case.
Unboxing a Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case for the first time, I was immediately struck by the quality of the borosilicate glass. The etched graduations and the Schellbach band spoke of meticulous craftsmanship. The PTFE stopcock moved with a smooth, reassuring action, promising consistent and leak-free dispensing.
Compared to simpler, manually-zeroed burets I’d previously used, the Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case felt like a significant upgrade. While manual burets require careful meniscus alignment for each reading, the self-zeroing feature of this model streamlines the process, reducing the chance of human error. It offered the promise of improved efficiency and reliability, which were key considerations for my needs.
My initial excitement stemmed from the potential time savings and enhanced precision the Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case offered. Having spent countless hours manually adjusting and reading burets, the prospect of automation was highly appealing. The build quality and design suggested a robust and reliable instrument, which further heightened my expectations.
Real-World Testing: Putting Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case to the Test
First Use Experience
I tested the Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case in a quality control laboratory setting where consistent and precise titrations are essential. The lab environment was climate-controlled, ensuring stable temperatures, a critical factor for accurate volumetric measurements.
The Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case performed admirably even in demanding conditions. The automatic self-zeroing function worked flawlessly, consistently setting the initial volume with minimal user intervention. The three-way stopcock allowed for easy filling and dispensing without the need for clumsy manual adjustments.
Using the Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case was straightforward, but familiarity with standard titration techniques is assumed. Novice users may require some initial training to understand the proper handling of the buret and the significance of accurate endpoint determination. The Schellbach band greatly enhanced the visibility of the meniscus, reducing parallax errors.
A slight issue arose initially with the flow rate through the PTFE stopcock. The stopcock needed a bit of greasing to ensure a smooth, consistent drip without sudden surges. Once lubricated, the flow became remarkably controlled, allowing for precise dropwise additions near the titration endpoint.
Extended Use & Reliability
After several weeks of continuous use, the Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case remained a reliable workhorse. Titrations were completed more quickly and with greater confidence compared to when using manual burets. The self-zeroing feature proved to be a significant time-saver, particularly when performing multiple titrations consecutively.
The Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case displayed no signs of wear and tear during the testing period, despite frequent handling and exposure to various chemical solutions. The borosilicate glass construction resisted staining and chemical attack, maintaining its clarity and integrity. The PTFE stopcock continued to operate smoothly after the initial greasing.
Cleaning the Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case after each use was crucial for maintaining its accuracy. Rinsing with deionized water followed by acetone proved sufficient to remove any residual titrant. The PTFE stopcock could be easily disassembled for thorough cleaning, preventing any buildup of contaminants.
Having previously relied on manual burets, the Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case significantly outperformed them in terms of efficiency, precision, and ease of use. The self-zeroing feature and controlled flow rate offered a level of convenience and accuracy that manual burets simply couldn’t match. The improved meniscus visibility afforded by the Schellbach band also contributed to more reliable results.
Breaking Down the Features of Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case
Specifications
The Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case has a capacity of 50 mL. The graduations are in 0.1 mL increments, providing a high level of precision for volumetric measurements.
The range of the buret is specified as 1.5-50 mL, indicating the usable volume after accounting for the self-zeroing mechanism. The total length of the buret is 754 mm, a standard dimension for a 50 mL buret. These dimensions make it suitable for use in a variety of laboratory setups.
The buret features a three-way PTFE stopcock, allowing for easy filling, dispensing, and shut-off. The overflow and filling tubes have a 0.25″ outer diameter, facilitating convenient connection to reagent reservoirs. The Schellbach band enhances the visibility of the meniscus, minimizing parallax errors and improving accuracy.
The borosilicate glass construction ensures chemical resistance and thermal stability. Borosilicate glass, a hallmark of Kimble/Kontes products, is known for its low coefficient of thermal expansion, reducing the risk of cracking or shattering due to temperature changes. The buret is calibrated to be read at the apparent meniscus, which is a common practice, but the “true” meniscus may result in a lesser volume being dispensed from zero.
Performance & Functionality
The Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case excels in delivering accurate and reproducible titrations. The self-zeroing mechanism eliminates the need for manual adjustments, saving time and reducing the potential for human error. The three-way stopcock provides excellent control over the flow rate, enabling precise dropwise additions near the titration endpoint.
The Schellbach band significantly improves the visibility of the meniscus, which is particularly beneficial when working with clear or colorless solutions. The fine graduations and sharp markings make it easy to read the volume accurately. The performance of this buret consistently met or exceeded expectations, delivering reliable results in a quality control laboratory environment.
However, the initial greasing required for the PTFE stopcock could be considered a minor inconvenience. Also, the potential for slight discrepancies between the apparent and true meniscus should be considered when extremely high accuracy is required. Overall, the strengths of the Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case far outweigh its weaknesses.
Design & Ergonomics
The Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case features a slender and ergonomic design. The lightweight borosilicate glass makes it easy to handle, even during extended use. The smooth contours and rounded edges minimize the risk of accidental breakage.
The PTFE stopcock provides a comfortable and secure grip, allowing for precise flow control. The position of the filling and overflow tubes is well-considered, facilitating easy connection to reagent reservoirs. The self-zeroing mechanism is intuitive and requires minimal user training.
There is a slight learning curve associated with properly greasing the PTFE stopcock. This ensures smooth and consistent operation, although it is a relatively simple task. Overall, the design of the Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case is both functional and user-friendly.
Durability & Maintenance
The borosilicate glass construction ensures that the Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case is a durable and long-lasting instrument. With proper care and maintenance, this buret should provide years of reliable service. The chemical resistance of borosilicate glass minimizes the risk of corrosion or degradation from exposure to various chemical solutions.
The PTFE stopcock is also designed for durability, resisting wear and tear from frequent use. The stopcock can be easily disassembled for thorough cleaning and lubrication, further extending its lifespan. Regular cleaning with deionized water and acetone is essential for maintaining the accuracy of the buret.
The Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case is relatively easy to maintain and repair. Replacement PTFE stopcocks are readily available from Kimble/Kontes if needed. With proper care, this buret should not require frequent repairs.
Accessories and Customization Options
The Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case is primarily designed as a standalone instrument. However, it is compatible with a variety of standard laboratory accessories, such as reagent reservoirs and titration stands. The 0.25″ outer diameter of the filling and overflow tubes allows for easy connection to various reagent delivery systems.
While the buret itself is not customizable, users can select from a range of accessories to enhance its functionality. These include specialized titration tips for micro-volume dispensing and magnetic stirrers to ensure thorough mixing during titrations. Additionally, users can choose from a variety of reagent reservoirs and stands to create a complete titration setup.
The Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case is designed to be compatible with standard laboratory glassware and equipment. This makes it easy to integrate into existing workflows. The lack of specific customization options is offset by the buret’s robust design and high level of functionality.
Pros and Cons of Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case
Pros
- Automatic self-zeroing eliminates the need for manual adjustments, saving time and reducing human error.
- Three-way PTFE stopcock provides excellent flow control for precise titrations.
- Schellbach band enhances meniscus visibility, improving accuracy.
- Durable borosilicate glass construction ensures chemical resistance and longevity.
- The buret’s design and function ensure consistent and reproducible results.
Cons
- Initial greasing of the PTFE stopcock is required for optimal performance.
- Potential discrepancy between apparent and true meniscus may affect accuracy in some applications.
Who Should Buy Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case?
The Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case is perfect for quality control laboratories, research facilities, and educational institutions that require accurate and efficient titrations. It is an excellent choice for chemists, lab technicians, and students who perform volumetric analyses on a regular basis. The self-zeroing feature makes it particularly suitable for high-throughput applications where time is of the essence.
This buret may not be necessary for hobbyists or individuals who only perform occasional titrations. Simpler, manually-zeroed burets may suffice for those applications. Also, laboratories that require extremely high accuracy may consider burets with finer graduations or automated titration systems.
A must-have accessory for the Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case is a suitable reagent reservoir and titration stand. These accessories provide a stable and convenient platform for performing titrations. Additionally, a magnetic stirrer can be used to ensure thorough mixing during the titration process.
Conclusion on Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case
The Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case is a high-quality instrument that delivers accurate and reliable titrations. Its self-zeroing feature and three-way PTFE stopcock provide significant advantages over manual burets. The durable borosilicate glass construction ensures longevity, while the Schellbach band improves meniscus visibility.
At $429.99 for a case, the price may seem high, but it is justified by the buret’s performance, durability, and time-saving features. For laboratories that require frequent and accurate titrations, the Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case is a worthwhile investment. The cost is justified when taking into account the time saved and the reliability of the buret’s measurements.
I would personally recommend the Kimble/Kontes KIMAX Brand Schellbach Burets, Automatic Self-Zeroing, Three-Way PTFE Stopcock 17170F-50, Case to any laboratory or educational institution seeking a precise and efficient titration solution. This buret is a valuable addition to any analytical chemistry workflow. Invest in quality, invest in Kimble/Kontes, and streamline your titrations today!