Field Test Review of the Kimble/Kontes KIMAX Burets, Class A, Straight Bore PTFE Stopcock, Kimble Chase 17027F 25
The Kimble/Kontes KIMAX Burets, Class A, Straight Bore PTFE Stopcock, Kimble Chase 17027F 25 isn’t exactly the kind of gear you’d take on a backcountry camping trip, but its precision is crucial in a different kind of demanding environment: the analytical laboratory. As someone who’s spent over a decade in both field research and lab analysis, I understand the vital role that accurate measurements play. This buret, from Kimble Chase, promises accuracy and reliability, but does it deliver under pressure?
My need for this particular buret stemmed from a frustrating experience with a cheaper, less accurate model. I was performing titrations to determine the acidity of soil samples collected from a remote agricultural site, and the inconsistent results were throwing off my entire analysis. This led me to seek a Class A certified buret with a reliable stopcock for precise dispensing.
Upon unboxing the Kimble/Kontes KIMAX Burets, Class A, Straight Bore PTFE Stopcock, Kimble Chase 17027F 25, I was immediately impressed by the clarity of the glass and the smoothness of the PTFE stopcock. It felt solid and well-made, a definite step up from my previous, less expensive buret.
I considered other options, including burets from BrandTech and Wheaton. Ultimately, I chose the Kimble Chase model due to its combination of Class A certification, the perceived durability of the KIMAX glass, and the positive reviews regarding the PTFE stopcock’s leak-free operation. The price point of $409.99 is substantial, but the potential for improved accuracy and reduced wasted reagent made it a worthwhile investment.
My initial impression was one of cautious optimism. This wasn’t just a piece of lab equipment; it was a tool that could directly impact the quality of my research. The clarity and precision etched on the glass scale instilled a sense of confidence, yet the true test would be in the actual titration process.
Real-World Testing: Putting Kimble/Kontes KIMAX Burets, Class A, Straight Bore PTFE Stopcock, Kimble Chase 17027F 25 to the Test
First Use Experience
My first test involved titrating a standardized hydrochloric acid solution against a sodium hydroxide solution of unknown concentration, a classic acid-base titration. The testing location was my university’s analytical chemistry lab, under controlled temperature and humidity conditions. The PTFE stopcock provided exceptional control, allowing for drop-wise addition of the titrant near the endpoint of the reaction.
The buret performed admirably, delivering consistent and precise volumes. I observed no leakage from the stopcock, even when dispensing very small amounts. The clear graduations on the KIMAX glass made it easy to read the volume accurately, minimizing parallax error.
The only minor issue was the slight meniscus that formed in the buret. While this is unavoidable with aqueous solutions, it required careful alignment of the eye to ensure accurate readings.
Extended Use & Reliability
After several weeks of regular use, the Kimble/Kontes KIMAX Burets, Class A, Straight Bore PTFE Stopcock, Kimble Chase 17027F 25 has proven to be a reliable and accurate instrument. The glass shows no signs of clouding or etching, even after exposure to various chemicals. The PTFE stopcock continues to operate smoothly and without leaks.
Cleaning is straightforward; a simple rinse with distilled water is usually sufficient. For more stubborn residues, a mild detergent solution can be used. It’s crucial to avoid harsh abrasives that could scratch the glass or damage the stopcock.
Compared to my previous buret, the Kimble Chase model offers significantly improved accuracy and precision. The Class A certification provides confidence in the reliability of the measurements, and the leak-free stopcock reduces reagent waste. The difference in the quality of data obtained is noticeable.
Breaking Down the Features of Kimble/Kontes KIMAX Burets, Class A, Straight Bore PTFE Stopcock, Kimble Chase 17027F 25
Specifications
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Capacity: 25 mL. This is the total volume the buret can hold.
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Graduations: 0.1 mL. This refers to the smallest volume increment marked on the buret scale. A smaller graduation allows for more precise measurements.
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Length: 614 mm. This is the overall length of the buret, which affects its stability and ease of use.
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Tolerance: ±0.03 mL. This is the maximum permissible error in the volume delivered by the buret. The Class A certification guarantees this level of accuracy.
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Cap Size: 13. This likely refers to the size of the dust cap included to prevent contamination.
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Kimble Chase No.: 17027F 25. This is the manufacturer’s unique product identification code.
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Stopcock: Straight Bore PTFE. The PTFE (Teflon) stopcock is chemically inert and provides smooth, leak-free operation. The straight bore design allows for easy cleaning and minimizes dead volume.
These specifications are critical for applications requiring high accuracy. The Class A certification assures users of the buret’s compliance with rigorous accuracy standards, making it suitable for quantitative analysis.
Performance & Functionality
The Kimble/Kontes KIMAX Burets, Class A, Straight Bore PTFE Stopcock, Kimble Chase 17027F 25 excels in delivering accurate and reproducible volumes. The fine graduations allow for precise readings, and the PTFE stopcock provides excellent control over the flow rate. Its precision significantly reduces errors in titrations.
The buret’s strengths lie in its accuracy and reliability. It’s easy to use, and the PTFE stopcock eliminates the risk of leaks. One minor weakness is the potential for parallax error when reading the meniscus, but this can be minimized with careful technique.
Overall, the buret meets and exceeds expectations for a Class A certified instrument. It provides the accuracy and precision needed for demanding analytical applications.
Design & Ergonomics
The buret is constructed from KIMAX borosilicate glass, known for its chemical resistance and durability. Its weight is well-balanced, making it easy to handle.
The design is simple and functional, with a clear focus on accuracy and ease of use. The graduations are etched in durable white ceramic enamel, making them easy to read against both light and dark backgrounds. The PTFE stopcock turns smoothly and provides a positive seal. There is a slight learning curve associated with correctly reading the meniscus.
Durability & Maintenance
The KIMAX glass is resistant to cracking and breaking under normal laboratory conditions. With proper care and cleaning, the buret should last for many years.
Maintenance is minimal, primarily involving rinsing and cleaning. The PTFE stopcock is self-lubricating and requires no special maintenance. Regular visual inspection for cracks or chips is recommended.
Accessories and Customization Options
The buret comes with a KIM-KAP dust cap to prevent contamination. No other accessories are included.
There are limited customization options for a buret. However, different stands are available to support the buret during use. The buret is compatible with standard titration setups.
Pros and Cons of Kimble/Kontes KIMAX Burets, Class A, Straight Bore PTFE Stopcock, Kimble Chase 17027F 25
Pros
- Class A certification guarantees high accuracy and precision.
- PTFE stopcock provides smooth, leak-free operation.
- KIMAX borosilicate glass is chemically resistant and durable.
- Fine graduations (0.1 mL) allow for precise readings.
- Easy to clean and maintain.
Cons
- Relatively high price compared to non-Class A burets.
- Potential for parallax error when reading the meniscus.
Who Should Buy Kimble/Kontes KIMAX Burets, Class A, Straight Bore PTFE Stopcock, Kimble Chase 17027F 25?
The Kimble/Kontes KIMAX Burets, Class A, Straight Bore PTFE Stopcock, Kimble Chase 17027F 25 is perfect for analytical chemists, laboratory technicians, and researchers who require highly accurate and reliable titrations. It’s ideal for applications in quality control, environmental monitoring, and pharmaceutical analysis.
This buret might be overkill for students in introductory chemistry labs or for applications where high precision is not essential. For those on a tight budget, a less expensive, non-Class A buret may suffice.
A good buret stand is a must-have accessory to ensure stability and prevent spills. Also, consider purchasing a wash bottle for rinsing the buret after use.
Conclusion on Kimble/Kontes KIMAX Burets, Class A, Straight Bore PTFE Stopcock, Kimble Chase 17027F 25
The Kimble/Kontes KIMAX Burets, Class A, Straight Bore PTFE Stopcock, Kimble Chase 17027F 25 is a high-quality instrument that delivers exceptional accuracy and reliability. The Class A certification and the smooth PTFE stopcock make it a worthwhile investment for anyone who needs precise volume measurements.
The price of $409.99 is justified by the buret’s superior performance and durability. While cheaper options are available, they often lack the accuracy and reliability needed for demanding analytical applications.
I would wholeheartedly recommend this buret to anyone who values precision and accuracy in their laboratory work. If you’re tired of inconsistent results and leaky stopcocks, the Kimble/Kontes KIMAX Burets, Class A, Straight Bore PTFE Stopcock, Kimble Chase 17027F 25 is a worthwhile upgrade. Invest in accuracy; invest in Kimble Chase.